390653694 has 12 divisors (see below), whose sum is σ = 846416376. Its totient is φ = 130217892.

The previous prime is 390653687. The next prime is 390653729. The reversal of 390653694 is 496356093.

It is a happy number.

It is a super-2 number, since 2×390653694² = 305220617271691272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10851474 + ... + 10851509.

It is an arithmetic number, because the mean of its divisors is an integer number (70534698).

Almost surely, 2^390653694 is an apocalyptic number.

390653694 is an abundant number, since it is smaller than the sum of its proper divisors (455762682).

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

390653694 is a wasteful number, since it uses less digits than its factorization.

390653694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21702991 (or 21702988 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 390653694 is about 19764.9612698836. The cubic root of 390653694 is about 731.0223331582.

It can be divided in two parts, 3906 and 53694, that added together give a square (57600 = 240²).

The spelling of 390653694 in words is "three hundred ninety million, six hundred fifty-three thousand, six hundred ninety-four".