395401967 has 2 divisors, whose sum is σ = 395401968. Its totient is φ = 395401966.

The previous prime is 395401949. The next prime is 395401987. The reversal of 395401967 is 769104593.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395401967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395401987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197700983 + 197700984.

It is an arithmetic number, because the mean of its divisors is an integer number (197700984).

Almost surely, 2^395401967 is an apocalyptic number.

395401967 is a deficient number, since it is larger than the sum of its proper divisors (1).

395401967 is an equidigital number, since it uses as much as digits as its factorization.

395401967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 395401967 is about 19884.7169202883. The cubic root of 395401967 is about 733.9721960082.

The spelling of 395401967 in words is "three hundred ninety-five million, four hundred one thousand, nine hundred sixty-seven".