396955723 has 2 divisors, whose sum is σ = 396955724. Its totient is φ = 396955722.

The previous prime is 396955711. The next prime is 396955739. The reversal of 396955723 is 327559693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396955723 - 2⁹ = 396955211 is a prime.

It is not a weakly prime, because it can be changed into another prime (396955703) 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, 198477861 + 198477862.

It is an arithmetic number, because the mean of its divisors is an integer number (198477862).

Almost surely, 2^396955723 is an apocalyptic number.

396955723 is a deficient number, since it is larger than the sum of its proper divisors (1).

396955723 is an equidigital number, since it uses as much as digits as its factorization.

396955723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1530900, while the sum is 49.

The square root of 396955723 is about 19923.7477147248. The cubic root of 396955723 is about 734.9323355421.

The spelling of 396955723 in words is "three hundred ninety-six million, nine hundred fifty-five thousand, seven hundred twenty-three".