396955739 has 2 divisors, whose sum is σ = 396955740. Its totient is φ = 396955738.

The previous prime is 396955723. The next prime is 396955751. The reversal of 396955739 is 937559693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396955739 - 2⁴ = 396955723 is a prime.

It is a super-2 number, since 2×396955739² = 315147717450072242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396955759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198477869 + 198477870.

It is an arithmetic number, because the mean of its divisors is an integer number (198477870).

Almost surely, 2^396955739 is an apocalyptic number.

396955739 is a deficient number, since it is larger than the sum of its proper divisors (1).

396955739 is an equidigital number, since it uses as much as digits as its factorization.

396955739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6889050, while the sum is 56.

The square root of 396955739 is about 19923.7481162556. The cubic root of 396955739 is about 734.9323454164.

The spelling of 396955739 in words is "three hundred ninety-six million, nine hundred fifty-five thousand, seven hundred thirty-nine".