390491363 has 4 divisors (see below), whose sum is σ = 411043560. Its totient is φ = 369939168.

The previous prime is 390491359. The next prime is 390491417. The reversal of 390491363 is 363194093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390491363 - 2² = 390491359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390491963) 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, 10276070 + ... + 10276107.

It is an arithmetic number, because the mean of its divisors is an integer number (102760890).

Almost surely, 2^390491363 is an apocalyptic number.

390491363 is a deficient number, since it is larger than the sum of its proper divisors (20552197).

390491363 is a wasteful number, since it uses less digits than its factorization.

390491363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552196.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 390491363 is about 19760.8543084554. The cubic root of 390491363 is about 730.9210635606.

The spelling of 390491363 in words is "three hundred ninety million, four hundred ninety-one thousand, three hundred sixty-three".