395007961 has 2 divisors, whose sum is σ = 395007962. Its totient is φ = 395007960.

The previous prime is 395007953. The next prime is 395008007. The reversal of 395007961 is 169700593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336025561 + 58982400 = 18331^2 + 7680^2 .

It is a cyclic number.

It is not a de Polignac number, because 395007961 - 2³ = 395007953 is a prime.

It is not a weakly prime, because it can be changed into another prime (395007931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197503980 + 197503981.

It is an arithmetic number, because the mean of its divisors is an integer number (197503981).

Almost surely, 2^395007961 is an apocalyptic number.

It is an amenable number.

395007961 is a deficient number, since it is larger than the sum of its proper divisors (1).

395007961 is an equidigital number, since it uses as much as digits as its factorization.

395007961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 395007961 is about 19874.8071940334. The cubic root of 395007961 is about 733.7283213502.

The spelling of 395007961 in words is "three hundred ninety-five million, seven thousand, nine hundred sixty-one".