1390069872 has 240 divisors, whose sum is σ = 4300171200. Its totient is φ = 417374208.

The previous prime is 1390069871. The next prime is 1390069873. The reversal of 1390069872 is 2789600931.

It is an interprime number because it is at equal distance from previous prime (1390069871) and next prime (1390069873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390069871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9329254 + ... + 9329402.

It is an arithmetic number, because the mean of its divisors is an integer number (17917380).

Almost surely, 2^1390069872 is an apocalyptic number.

1390069872 is a gapful number since it is divisible by the number (12) 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 1390069872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150085600).

1390069872 is an abundant number, since it is smaller than the sum of its proper divisors (2910101328).

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

1390069872 is a wasteful number, since it uses less digits than its factorization.

1390069872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1390069872 is about 37283.6408093416. The cubic root of 1390069872 is about 1116.0377294833.

The spelling of 1390069872 in words is "one billion, three hundred ninety million, sixty-nine thousand, eight hundred seventy-two".