396948857 has 2 divisors, whose sum is σ = 396948858. Its totient is φ = 396948856.

The previous prime is 396948841. The next prime is 396948907. The reversal of 396948857 is 758849693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299255401 + 97693456 = 17299^2 + 9884^2 .

It is a cyclic number.

It is not a de Polignac number, because 396948857 - 2⁴ = 396948841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396948796 and 396948805.

It is not a weakly prime, because it can be changed into another prime (396948157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198474428 + 198474429.

It is an arithmetic number, because the mean of its divisors is an integer number (198474429).

Almost surely, 2^396948857 is an apocalyptic number.

It is an amenable number.

396948857 is a deficient number, since it is larger than the sum of its proper divisors (1).

396948857 is an equidigital number, since it uses as much as digits as its factorization.

396948857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The square root of 396948857 is about 19923.5754070398. The cubic root of 396948857 is about 734.9280982312.

The spelling of 396948857 in words is "three hundred ninety-six million, nine hundred forty-eight thousand, eight hundred fifty-seven".