44037021 has 32 divisors (see below), whose sum is σ = 71463168. Its totient is φ = 23546880.

The previous prime is 44037017. The next prime is 44037029. The reversal of 44037021 is 12073044.

It is not a de Polignac number, because 44037021 - 2² = 44037017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44037029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104391 + ... + 104811.

It is an arithmetic number, because the mean of its divisors is an integer number (2233224).

Almost surely, 2^44037021 is an apocalyptic number.

It is an amenable number.

44037021 is a deficient number, since it is larger than the sum of its proper divisors (27426147).

44037021 is a wasteful number, since it uses less digits than its factorization.

44037021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 44037021 is about 6636.0395568441. The cubic root of 44037021 is about 353.1338186745.

It can be divided in two parts, 440370 and 21, that added together give a triangular number (440391 = T₉₃₈).

The spelling of 44037021 in words is "forty-four million, thirty-seven thousand, twenty-one".