425387979 has 24 divisors (see below), whose sum is σ = 669099600. Its totient is φ = 259398720.

The previous prime is 425387969. The next prime is 425387987. The reversal of 425387979 is 979783524.

It is not a de Polignac number, because 425387979 - 2²³ = 416999371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425387969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37932 + ... + 47849.

It is an arithmetic number, because the mean of its divisors is an integer number (27879150).

Almost surely, 2^425387979 is an apocalyptic number.

425387979 is a deficient number, since it is larger than the sum of its proper divisors (243711621).

425387979 is a wasteful number, since it uses less digits than its factorization.

425387979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85835 (or 85832 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 425387979 is about 20624.9358544457. The cubic root of 425387979 is about 752.0760135880.

The spelling of 425387979 in words is "four hundred twenty-five million, three hundred eighty-seven thousand, nine hundred seventy-nine".