425190979 has 2 divisors, whose sum is σ = 425190980. Its totient is φ = 425190978.

The previous prime is 425190959. The next prime is 425190991. The reversal of 425190979 is 979091524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425190979 - 2²³ = 416802371 is a prime.

It is not a weakly prime, because it can be changed into another prime (425190959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212595489 + 212595490.

It is an arithmetic number, because the mean of its divisors is an integer number (212595490).

Almost surely, 2^425190979 is an apocalyptic number.

425190979 is a deficient number, since it is larger than the sum of its proper divisors (1).

425190979 is an equidigital number, since it uses as much as digits as its factorization.

425190979 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 46.

The square root of 425190979 is about 20620.1595289658. The cubic root of 425190979 is about 751.9598985283.

The spelling of 425190979 in words is "four hundred twenty-five million, one hundred ninety thousand, nine hundred seventy-nine".