469981644 has 48 divisors (see below), whose sum is σ = 1259287680. Its totient is φ = 134922240.

The previous prime is 469981601. The next prime is 469981679. The reversal of 469981644 is 446189964.

It is an unprimeable number.

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, 91189 + ... + 96204.

It is an arithmetic number, because the mean of its divisors is an integer number (26235160).

Almost surely, 2^469981644 is an apocalyptic number.

469981644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

469981644 is an abundant number, since it is smaller than the sum of its proper divisors (789306036).

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

469981644 is a wasteful number, since it uses less digits than its factorization.

469981644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187430 (or 187428 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 469981644 is about 21679.0600349738. The cubic root of 469981644 is about 777.4878877915.

The spelling of 469981644 in words is "four hundred sixty-nine million, nine hundred eighty-one thousand, six hundred forty-four".