44397018436 has 27 divisors (see below), whose sum is σ = 78367945719. Its totient is φ = 22007820288.

The previous prime is 44397018377. The next prime is 44397018461. The reversal of 44397018436 is 63481079344.

The square root of 44397018436 is 210706.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 21068100 + 44375950336 = 4590^2 + 210656^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44397018436.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 57733060 + ... + 57733828.

Almost surely, 2^44397018436 is an apocalyptic number.

44397018436 is the 210706-th square number.

It is an amenable number.

44397018436 is a deficient number, since it is larger than the sum of its proper divisors (33970927283).

44397018436 is an frugal number, since it uses more digits than its factorization.

44397018436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

Multiplying 44397018436 by its sum of digits (49), we get a square (2175453903364 = 1474942²).

The spelling of 44397018436 in words is "forty-four billion, three hundred ninety-seven million, eighteen thousand, four hundred thirty-six".