396896641 has 2 divisors, whose sum is σ = 396896642. Its totient is φ = 396896640.

The previous prime is 396896629. The next prime is 396896651. The reversal of 396896641 is 146698693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227376241 + 169520400 = 15079^2 + 13020^2 .

It is a cyclic number.

It is not a de Polignac number, because 396896641 - 2²³ = 388508033 is a prime.

It is not a weakly prime, because it can be changed into another prime (396896651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198448320 + 198448321.

It is an arithmetic number, because the mean of its divisors is an integer number (198448321).

Almost surely, 2^396896641 is an apocalyptic number.

It is an amenable number.

396896641 is a deficient number, since it is larger than the sum of its proper divisors (1).

396896641 is an equidigital number, since it uses as much as digits as its factorization.

396896641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 396896641 is about 19922.2649565756. The cubic root of 396896641 is about 734.8958718392.

The spelling of 396896641 in words is "three hundred ninety-six million, eight hundred ninety-six thousand, six hundred forty-one".