44398138 has 16 divisors (see below), whose sum is σ = 69260544. Its totient is φ = 21322080.

The previous prime is 44398099. The next prime is 44398139. The reversal of 44398138 is 83189344.

It is a self number, because there is not a number n which added to its sum of digits gives 44398138.

It is not an unprimeable number, because it can be changed into a prime (44398139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5881 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (4328784).

Almost surely, 2^44398138 is an apocalyptic number.

44398138 is a deficient number, since it is larger than the sum of its proper divisors (24862406).

44398138 is a wasteful number, since it uses less digits than its factorization.

44398138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397.

The product of its digits is 82944, while the sum is 40.

The square root of 44398138 is about 6663.1927782408. The cubic root of 44398138 is about 354.0964604615.

The spelling of 44398138 in words is "forty-four million, three hundred ninety-eight thousand, one hundred thirty-eight".