4394472320 has 64 divisors (see below), whose sum is σ = 12006338400. Its totient is φ = 1506674688.

The previous prime is 4394472311. The next prime is 4394472337. The reversal of 4394472320 is 232744934.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×4394472320² = 38622773942492364800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485975 + ... + 494934.

Almost surely, 2^4394472320 is an apocalyptic number.

4394472320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4394472320 is an abundant number, since it is smaller than the sum of its proper divisors (7611866080).

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

4394472320 is an equidigital number, since it uses as much as digits as its factorization.

4394472320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980935 (or 980923 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 4394472320 is about 66290.8162568542. The cubic root of 4394472320 is about 1637.9560497341.

The spelling of 4394472320 in words is "four billion, three hundred ninety-four million, four hundred seventy-two thousand, three hundred twenty".