402825947 has 2 divisors, whose sum is σ = 402825948. Its totient is φ = 402825946.

The previous prime is 402825923. The next prime is 402825953. The reversal of 402825947 is 749528204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402825947 - 2⁸ = 402825691 is a prime.

It is not a weakly prime, because it can be changed into another prime (402825967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201412973 + 201412974.

It is an arithmetic number, because the mean of its divisors is an integer number (201412974).

Almost surely, 2^402825947 is an apocalyptic number.

402825947 is a deficient number, since it is larger than the sum of its proper divisors (1).

402825947 is an equidigital number, since it uses as much as digits as its factorization.

402825947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 402825947 is about 20070.5243329615. The cubic root of 402825947 is about 738.5373757916.

The spelling of 402825947 in words is "four hundred two million, eight hundred twenty-five thousand, nine hundred forty-seven".