464439988 has 12 divisors (see below), whose sum is σ = 840796740. Its totient is φ = 224212352.

The previous prime is 464439919. The next prime is 464440013. The reversal of 464439988 is 889934464.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 194100624 + 270339364 = 13932^2 + 16442^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2001781 + ... + 2002012.

It is an arithmetic number, because the mean of its divisors is an integer number (70066395).

Almost surely, 2^464439988 is an apocalyptic number.

It is an amenable number.

464439988 is a deficient number, since it is larger than the sum of its proper divisors (376356752).

464439988 is a wasteful number, since it uses less digits than its factorization.

464439988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003826 (or 4003824 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The square root of 464439988 is about 21550.8697736309. The cubic root of 464439988 is about 774.4199547377.

The spelling of 464439988 in words is "four hundred sixty-four million, four hundred thirty-nine thousand, nine hundred eighty-eight".