396948907 has 2 divisors, whose sum is σ = 396948908. Its totient is φ = 396948906.

The previous prime is 396948857. The next prime is 396948917. The reversal of 396948907 is 709849693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396948907 is a prime.

It is not a weakly prime, because it can be changed into another prime (396948917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198474453 + 198474454.

It is an arithmetic number, because the mean of its divisors is an integer number (198474454).

Almost surely, 2^396948907 is an apocalyptic number.

396948907 is a deficient number, since it is larger than the sum of its proper divisors (1).

396948907 is an equidigital number, since it uses as much as digits as its factorization.

396948907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 396948907 is about 19923.5766618346. The cubic root of 396948907 is about 734.9281290886.

The spelling of 396948907 in words is "three hundred ninety-six million, nine hundred forty-eight thousand, nine hundred seven".