426991884 has 24 divisors (see below), whose sum is σ = 1086888768. Its totient is φ = 129391440.

The previous prime is 426991847. The next prime is 426991889. The reversal of 426991884 is 488199624.

It is not an unprimeable number, because it can be changed into a prime (426991889) 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 7 ways as a sum of consecutive naturals, for example, 1617262 + ... + 1617525.

It is an arithmetic number, because the mean of its divisors is an integer number (45287032).

Almost surely, 2^426991884 is an apocalyptic number.

426991884 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

426991884 is an abundant number, since it is smaller than the sum of its proper divisors (659896884).

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

426991884 is a wasteful number, since it uses less digits than its factorization.

426991884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234805 (or 3234803 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 426991884 is about 20663.7819384545. The cubic root of 426991884 is about 753.0200502942.

The spelling of 426991884 in words is "four hundred twenty-six million, nine hundred ninety-one thousand, eight hundred eighty-four".