1392397860864 has 60 divisors (see below), whose sum is σ = 3712947779744. Its totient is φ = 464132603904.

The previous prime is 1392397860839. The next prime is 1392397860869. The reversal of 1392397860864 is 4680687932931.

It is a super-3 number, since 3×1392397860864³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1392397860795 and 1392397860804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392397860869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14115052 + ... + 14213355.

Almost surely, 2^{1392397860864} is an apocalyptic number.

It is an amenable number.

1392397860864 is an abundant number, since it is smaller than the sum of its proper divisors (2320549918880).

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

1392397860864 is an frugal number, since it uses more digits than its factorization.

1392397860864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28328438 (or 28328412 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 1392397860864 in words is "one trillion, three hundred ninety-two billion, three hundred ninety-seven million, eight hundred sixty thousand, eight hundred sixty-four".