390953906 has 8 divisors (see below), whose sum is σ = 670206720. Its totient is φ = 167551668.

The previous prime is 390953891. The next prime is 390953921. The reversal of 390953906 is 609359093.

It is an interprime number because it is at equal distance from previous prime (390953891) and next prime (390953921).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13962626 + ... + 13962653.

It is an arithmetic number, because the mean of its divisors is an integer number (83775840).

Almost surely, 2^390953906 is an apocalyptic number.

390953906 is a deficient number, since it is larger than the sum of its proper divisors (279252814).

390953906 is a wasteful number, since it uses less digits than its factorization.

390953906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27925288.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 390953906 is about 19772.5543620444. The cubic root of 390953906 is about 731.2095454183.

The spelling of 390953906 in words is "three hundred ninety million, nine hundred fifty-three thousand, nine hundred six".