396757139 has 2 divisors, whose sum is σ = 396757140. Its totient is φ = 396757138.

The previous prime is 396757103. The next prime is 396757171. The reversal of 396757139 is 931757693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396757139 - 2¹² = 396753043 is a prime.

It is not a weakly prime, because it can be changed into another prime (396751139) 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, 198378569 + 198378570.

It is an arithmetic number, because the mean of its divisors is an integer number (198378570).

Almost surely, 2^396757139 is an apocalyptic number.

396757139 is a deficient number, since it is larger than the sum of its proper divisors (1).

396757139 is an equidigital number, since it uses as much as digits as its factorization.

396757139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 50.

The square root of 396757139 is about 19918.7634907391. The cubic root of 396757139 is about 734.8097608749.

The spelling of 396757139 in words is "three hundred ninety-six million, seven hundred fifty-seven thousand, one hundred thirty-nine".