1297039392 has 120 divisors (see below), whose sum is σ = 4161426192. Its totient is φ = 393033600.

The previous prime is 1297039379. The next prime is 1297039409. The reversal of 1297039392 is 2939307921.

It is a happy number.

It is a super-2 number, since 2×1297039392² = 3364622368799459328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5767 + ... + 51257.

Almost surely, 2^1297039392 is an apocalyptic number.

1297039392 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 1297039392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2080713096).

1297039392 is an abundant number, since it is smaller than the sum of its proper divisors (2864386800).

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

1297039392 is a wasteful number, since it uses less digits than its factorization.

1297039392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45524 (or 45507 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 1297039392 is about 36014.4331067421. The cubic root of 1297039392 is about 1090.5637439585.

The spelling of 1297039392 in words is "one billion, two hundred ninety-seven million, thirty-nine thousand, three hundred ninety-two".