390691036 has 12 divisors (see below), whose sum is σ = 693075712. Its totient is φ = 192669408.

The previous prime is 390691033. The next prime is 390691039. The reversal of 390691036 is 630196093.

It is an interprime number because it is at equal distance from previous prime (390691033) and next prime (390691039).

It is a super-2 number, since 2×390691036² = 305278971221506592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 390690986 and 390691004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390691033) 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, 668700 + ... + 669283.

Almost surely, 2^390691036 is an apocalyptic number.

It is an amenable number.

390691036 is a deficient number, since it is larger than the sum of its proper divisors (302384676).

390691036 is a wasteful number, since it uses less digits than its factorization.

390691036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338060 (or 1338058 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 390691036 is about 19765.9058987945. The cubic root of 390691036 is about 731.0456248584.

The spelling of 390691036 in words is "three hundred ninety million, six hundred ninety-one thousand, thirty-six".