1392417372 has 24 divisors (see below), whose sum is σ = 3267129600. Its totient is φ = 461545456.

The previous prime is 1392417361. The next prime is 1392417409. The reversal of 1392417372 is 2737142931.

It is a super-2 number, since 2×1392417372² = 3877652275694772768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1392417372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321972 + ... + 326267.

It is an arithmetic number, because the mean of its divisors is an integer number (136130400).

Almost surely, 2^1392417372 is an apocalyptic number.

1392417372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1392417372 is an abundant number, since it is smaller than the sum of its proper divisors (1874712228).

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

1392417372 is a wasteful number, since it uses less digits than its factorization.

1392417372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648425 (or 648423 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 1392417372 is about 37315.1091650554. The cubic root of 1392417372 is about 1116.6656176223.

The spelling of 1392417372 in words is "one billion, three hundred ninety-two million, four hundred seventeen thousand, three hundred seventy-two".