390506000 has 40 divisors (see below), whose sum is σ = 944248344. Its totient is φ = 156201600.

The previous prime is 390505987. The next prime is 390506003. The reversal of 390506000 is 605093.

It can be written as a sum of positive squares in 4 ways, for example, as 32993536 + 357512464 = 5744^2 + 18908^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (390506003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95627 + ... + 99626.

Almost surely, 2^390506000 is an apocalyptic number.

It is an amenable number.

390506000 is an abundant number, since it is smaller than the sum of its proper divisors (553742344).

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

390506000 is a wasteful number, since it uses less digits than its factorization.

390506000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195276 (or 195260 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 390506000 is about 19761.2246584062. The cubic root of 390506000 is about 730.9301959504.

The spelling of 390506000 in words is "three hundred ninety million, five hundred six thousand".