425628939 has 4 divisors (see below), whose sum is σ = 567505256. Its totient is φ = 283752624.

The previous prime is 425628893. The next prime is 425628947. The reversal of 425628939 is 939826524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 425628939 - 2⁷ = 425628811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425628979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70938154 + ... + 70938159.

It is an arithmetic number, because the mean of its divisors is an integer number (141876314).

Almost surely, 2^425628939 is an apocalyptic number.

425628939 is a deficient number, since it is larger than the sum of its proper divisors (141876317).

425628939 is a wasteful number, since it uses less digits than its factorization.

425628939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141876316.

The product of its digits is 933120, while the sum is 48.

The square root of 425628939 is about 20630.7765001708. The cubic root of 425628939 is about 752.2179906683.

The spelling of 425628939 in words is "four hundred twenty-five million, six hundred twenty-eight thousand, nine hundred thirty-nine".