426344989 has 16 divisors (see below), whose sum is σ = 523190016. Its totient is φ = 339091200.

The previous prime is 426344983. The next prime is 426344993. The reversal of 426344989 is 989443624.

It is not a de Polignac number, because 426344989 - 2³ = 426344981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426344981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16782 + ... + 33679.

It is an arithmetic number, because the mean of its divisors is an integer number (32699376).

Almost surely, 2^426344989 is an apocalyptic number.

It is an amenable number.

426344989 is a deficient number, since it is larger than the sum of its proper divisors (96845027).

426344989 is a wasteful number, since it uses less digits than its factorization.

426344989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50556.

The product of its digits is 1492992, while the sum is 49.

The square root of 426344989 is about 20648.1231350455. The cubic root of 426344989 is about 752.6395816172.

The spelling of 426344989 in words is "four hundred twenty-six million, three hundred forty-four thousand, nine hundred eighty-nine".