396432377729 has 2 divisors, whose sum is σ = 396432377730. Its totient is φ = 396432377728.

The previous prime is 396432377723. The next prime is 396432377743. The reversal of 396432377729 is 927773234693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275679602704 + 120752775025 = 525052^2 + 347495^2 .

It is a cyclic number.

It is not a de Polignac number, because 396432377729 - 2²⁰ = 396431329153 is a prime.

It is a super-2 number, since 2×396432377729² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396432377723) 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, 198216188864 + 198216188865.

It is an arithmetic number, because the mean of its divisors is an integer number (198216188865).

Almost surely, 2^396432377729 is an apocalyptic number.

It is an amenable number.

396432377729 is a deficient number, since it is larger than the sum of its proper divisors (1).

396432377729 is an equidigital number, since it uses as much as digits as its factorization.

396432377729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72013536, while the sum is 62.

The spelling of 396432377729 in words is "three hundred ninety-six billion, four hundred thirty-two million, three hundred seventy-seven thousand, seven hundred twenty-nine".