396787619 has 2 divisors, whose sum is σ = 396787620. Its totient is φ = 396787618.

The previous prime is 396787609. The next prime is 396787649. The reversal of 396787619 is 916787693.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396787619 is a prime.

It is a super-2 number, since 2×396787619² = 314880829183378322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (396787609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198393809 + 198393810.

It is an arithmetic number, because the mean of its divisors is an integer number (198393810).

Almost surely, 2^396787619 is an apocalyptic number.

396787619 is a deficient number, since it is larger than the sum of its proper divisors (1).

396787619 is an equidigital number, since it uses as much as digits as its factorization.

396787619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 396787619 is about 19919.5285837793. The cubic root of 396787619 is about 734.8285771110.

The spelling of 396787619 in words is "three hundred ninety-six million, seven hundred eighty-seven thousand, six hundred nineteen".