390988463 has 2 divisors, whose sum is σ = 390988464. Its totient is φ = 390988462.

The previous prime is 390988427. The next prime is 390988529. The reversal of 390988463 is 364889093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390988463 - 2¹⁸ = 390726319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390988163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195494231 + 195494232.

It is an arithmetic number, because the mean of its divisors is an integer number (195494232).

Almost surely, 2^390988463 is an apocalyptic number.

390988463 is a deficient number, since it is larger than the sum of its proper divisors (1).

390988463 is an equidigital number, since it uses as much as digits as its factorization.

390988463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 390988463 is about 19773.4282055490. The cubic root of 390988463 is about 731.2310890183.

The spelling of 390988463 in words is "three hundred ninety million, nine hundred eighty-eight thousand, four hundred sixty-three".