438889464 has 48 divisors (see below), whose sum is σ = 1280097000. Its totient is φ = 135042624.

The previous prime is 438889457. The next prime is 438889469. The reversal of 438889464 is 464988834.

It is a super-2 number, since 2×438889464² = 385247923220414592, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 438889464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438889469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233514 + ... + 235385.

Almost surely, 2^438889464 is an apocalyptic number.

It is an amenable number.

438889464 is an abundant number, since it is smaller than the sum of its proper divisors (841207536).

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

438889464 is a wasteful number, since it uses less digits than its factorization.

438889464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468924 (or 468917 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 438889464 is about 20949.6888759714. The cubic root of 438889464 is about 759.9500567365.

The spelling of 438889464 in words is "four hundred thirty-eight million, eight hundred eighty-nine thousand, four hundred sixty-four".