390927663 has 24 divisors (see below), whose sum is σ = 660353408. Its totient is φ = 218190672.

The previous prime is 390927653. The next prime is 390927673. The reversal of 390927663 is 366729093.

It is an interprime number because it is at equal distance from previous prime (390927653) and next prime (390927673).

It is not a de Polignac number, because 390927663 - 2⁶ = 390927599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390927613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69445 + ... + 74862.

Almost surely, 2^390927663 is an apocalyptic number.

390927663 is a deficient number, since it is larger than the sum of its proper divisors (269425745).

390927663 is a wasteful number, since it uses less digits than its factorization.

390927663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144363 (or 144360 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The square root of 390927663 is about 19771.8907290122. The cubic root of 390927663 is about 731.1931841020.

The spelling of 390927663 in words is "three hundred ninety million, nine hundred twenty-seven thousand, six hundred sixty-three".