396269977 has 2 divisors, whose sum is σ = 396269978. Its totient is φ = 396269976.

The previous prime is 396269941. The next prime is 396269981. The reversal of 396269977 is 779962693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287505936 + 108764041 = 16956^2 + 10429^2 .

It is a cyclic number.

It is not a de Polignac number, because 396269977 - 2⁷ = 396269849 is a prime.

It is not a weakly prime, because it can be changed into another prime (396269927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198134988 + 198134989.

It is an arithmetic number, because the mean of its divisors is an integer number (198134989).

Almost surely, 2^396269977 is an apocalyptic number.

It is an amenable number.

396269977 is a deficient number, since it is larger than the sum of its proper divisors (1).

396269977 is an equidigital number, since it uses as much as digits as its factorization.

396269977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 58.

The square root of 396269977 is about 19906.5310137151. The cubic root of 396269977 is about 734.5088899975.

It can be divided in two parts, 39 and 6269977, that added together give a square (6270016 = 2504²).

The spelling of 396269977 in words is "three hundred ninety-six million, two hundred sixty-nine thousand, nine hundred seventy-seven".