1390259960 has 64 divisors (see below), whose sum is σ = 3225912480. Its totient is φ = 538969600.

The previous prime is 1390259947. The next prime is 1390259977. The reversal of 1390259960 is 699520931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172010 + ... + 179910.

Almost surely, 2^1390259960 is an apocalyptic number.

1390259960 is a gapful number since it is divisible by the number (10) 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 1390259960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612956240).

1390259960 is an abundant number, since it is smaller than the sum of its proper divisors (1835652520).

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

1390259960 is a wasteful number, since it uses less digits than its factorization.

1390259960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048 (or 8044 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 1390259960 is about 37286.1899367581. The cubic root of 1390259960 is about 1116.0885987992.

The spelling of 1390259960 in words is "one billion, three hundred ninety million, two hundred fifty-nine thousand, nine hundred sixty".