44401538 has 4 divisors (see below), whose sum is σ = 66602310. Its totient is φ = 22200768.

The previous prime is 44401507. The next prime is 44401541. The reversal of 44401538 is 83510444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44262409 + 139129 = 6653^2 + 373^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 44401538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100383 + ... + 11100386.

Almost surely, 2^44401538 is an apocalyptic number.

44401538 is a deficient number, since it is larger than the sum of its proper divisors (22200772).

44401538 is a wasteful number, since it uses less digits than its factorization.

44401538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22200771.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 44401538 is about 6663.4479063020. The cubic root of 44401538 is about 354.1054991081.

The spelling of 44401538 in words is "forty-four million, four hundred one thousand, five hundred thirty-eight".