44538890 has 24 divisors (see below), whose sum is σ = 88123140. Its totient is φ = 16195520.

The previous prime is 44538889. The next prime is 44538899. The reversal of 44538890 is 9883544.

It can be written as a sum of positive squares in 2 ways, for example, as 43705321 + 833569 = 6611^2 + 913^2 .

It is not an unprimeable number, because it can be changed into a prime (44538899) 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, 17195 + ... + 19614.

Almost surely, 2^44538890 is an apocalyptic number.

44538890 is a deficient number, since it is larger than the sum of its proper divisors (43584250).

44538890 is a wasteful number, since it uses less digits than its factorization.

44538890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36838 (or 36827 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 44538890 is about 6673.7463242170. The cubic root of 44538890 is about 354.4702539888.

The spelling of 44538890 in words is "forty-four million, five hundred thirty-eight thousand, eight hundred ninety".