1390219056 has 240 divisors, whose sum is σ = 4351626240. Its totient is φ = 412439040.

The previous prime is 1390219009. The next prime is 1390219109. The reversal of 1390219056 is 6509120931.

1390219056 is a `hidden beast` number, since 1 + 390 + 219 + 0 + 56 = 666.

It is a super-2 number, since 2×1390219056² = 3865418047331062272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1390219056.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3137971 + ... + 3138413.

It is an arithmetic number, because the mean of its divisors is an integer number (18131776).

Almost surely, 2^1390219056 is an apocalyptic number.

1390219056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390219056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175813120).

1390219056 is an abundant number, since it is smaller than the sum of its proper divisors (2961407184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390219056 is a wasteful number, since it uses less digits than its factorization.

1390219056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1390219056 is about 37285.6414186480. The cubic root of 1390219056 is about 1116.0776529001.

Adding to 1390219056 its reverse (6509120931), we get a palindrome (7899339987).

The spelling of 1390219056 in words is "one billion, three hundred ninety million, two hundred nineteen thousand, fifty-six".