44988381 has 12 divisors (see below), whose sum is σ = 65218140. Its totient is φ = 29883840.

The previous prime is 44988319. The next prime is 44988389. The reversal of 44988381 is 18388944.

44988381 is a `hidden beast` number, since 4 + 498 + 83 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38862756 + 6125625 = 6234^2 + 2475^2 .

It is not a de Polignac number, because 44988381 - 2⁹ = 44987869 is a prime.

It is a super-2 number, since 2×44988381² = 4047908850002322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44988389) 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, 6366 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (5434845).

Almost surely, 2^44988381 is an apocalyptic number.

It is an amenable number.

44988381 is a deficient number, since it is larger than the sum of its proper divisors (20229759).

44988381 is a wasteful number, since it uses less digits than its factorization.

44988381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18076 (or 18073 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 44988381 is about 6707.3378474623. The cubic root of 44988381 is about 355.6587148188.

It can be divided in two parts, 44988 and 381, that added together give a square (45369 = 213²).

The spelling of 44988381 in words is "forty-four million, nine hundred eighty-eight thousand, three hundred eighty-one".