390355616 has 24 divisors (see below), whose sum is σ = 878300640. Its totient is φ = 167295168.

The previous prime is 390355613. The next prime is 390355619. The reversal of 390355616 is 616553093.

It is an interprime number because it is at equal distance from previous prime (390355613) and next prime (390355619).

It is a super-4 number, since 4×390355616⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390355616.

It is not an unprimeable number, because it can be changed into a prime (390355613) 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, 871106 + ... + 871553.

It is an arithmetic number, because the mean of its divisors is an integer number (36595860).

Almost surely, 2^390355616 is an apocalyptic number.

It is an amenable number.

390355616 is an abundant number, since it is smaller than the sum of its proper divisors (487945024).

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

390355616 is a wasteful number, since it uses less digits than its factorization.

390355616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742676 (or 1742668 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 390355616 is about 19757.4192646712. The cubic root of 390355616 is about 730.8363567437.

The spelling of 390355616 in words is "three hundred ninety million, three hundred fifty-five thousand, six hundred sixteen".