399424763 has 2 divisors, whose sum is σ = 399424764. Its totient is φ = 399424762.

The previous prime is 399424709. The next prime is 399424787. The reversal of 399424763 is 367424993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399424763 - 2⁶ = 399424699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (399424793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199712381 + 199712382.

It is an arithmetic number, because the mean of its divisors is an integer number (199712382).

Almost surely, 2^399424763 is an apocalyptic number.

399424763 is a deficient number, since it is larger than the sum of its proper divisors (1).

399424763 is an equidigital number, since it uses as much as digits as its factorization.

399424763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 47.

The square root of 399424763 is about 19985.6139010039. The cubic root of 399424763 is about 736.4529317441.

The spelling of 399424763 in words is "three hundred ninety-nine million, four hundred twenty-four thousand, seven hundred sixty-three".