773990431 has 2 divisors, whose sum is σ = 773990432. Its totient is φ = 773990430.

The previous prime is 773990381. The next prime is 773990447. The reversal of 773990431 is 134099377.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 773990431 - 2⁹ = 773989919 is a prime.

It is a super-2 number, since 2×773990431² = 1198122374559131522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (773990731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386995215 + 386995216.

It is an arithmetic number, because the mean of its divisors is an integer number (386995216).

Almost surely, 2^773990431 is an apocalyptic number.

773990431 is a deficient number, since it is larger than the sum of its proper divisors (1).

773990431 is an equidigital number, since it uses as much as digits as its factorization.

773990431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 773990431 is about 27820.6835106544. The cubic root of 773990431 is about 918.1462479978.

The spelling of 773990431 in words is "seven hundred seventy-three million, nine hundred ninety thousand, four hundred thirty-one".