390135468 has 12 divisors (see below), whose sum is σ = 910316120. Its totient is φ = 130045152.

The previous prime is 390135461. The next prime is 390135523. The reversal of 390135468 is 864531093.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (390135461) 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, 16255633 + ... + 16255656.

Almost surely, 2^390135468 is an apocalyptic number.

It is an amenable number.

390135468 is an abundant number, since it is smaller than the sum of its proper divisors (520180652).

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

390135468 is a wasteful number, since it uses less digits than its factorization.

390135468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32511296 (or 32511294 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 390135468 is about 19751.8472047553. The cubic root of 390135468 is about 730.6989415159.

The spelling of 390135468 in words is "three hundred ninety million, one hundred thirty-five thousand, four hundred sixty-eight".