396722185949 has 2 divisors, whose sum is σ = 396722185950. Its totient is φ = 396722185948.

The previous prime is 396722185927. The next prime is 396722185963. The reversal of 396722185949 is 949581227693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373176817924 + 23545368025 = 610882^2 + 153445^2 .

It is a cyclic number.

It is not a de Polignac number, because 396722185949 - 2¹² = 396722181853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396722185549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198361092974 + 198361092975.

It is an arithmetic number, because the mean of its divisors is an integer number (198361092975).

Almost surely, 2^396722185949 is an apocalyptic number.

It is an amenable number.

396722185949 is a deficient number, since it is larger than the sum of its proper divisors (1).

396722185949 is an equidigital number, since it uses as much as digits as its factorization.

396722185949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58786560, while the sum is 65.

The spelling of 396722185949 in words is "three hundred ninety-six billion, seven hundred twenty-two million, one hundred eighty-five thousand, nine hundred forty-nine".