425679438 has 32 divisors (see below), whose sum is σ = 863210880. Its totient is φ = 139932000.

The previous prime is 425679433. The next prime is 425679479. The reversal of 425679438 is 834976524.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425679431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129313 + ... + 132563.

It is an arithmetic number, because the mean of its divisors is an integer number (26975340).

Almost surely, 2^425679438 is an apocalyptic number.

425679438 is an abundant number, since it is smaller than the sum of its proper divisors (437531442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425679438 is a wasteful number, since it uses less digits than its factorization.

425679438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552.

The product of its digits is 1451520, while the sum is 48.

The square root of 425679438 is about 20632.0003392788. Note that the first 3 decimals coincide. The cubic root of 425679438 is about 752.2477386096.

The spelling of 425679438 in words is "four hundred twenty-five million, six hundred seventy-nine thousand, four hundred thirty-eight".