44396991 has 20 divisors (see below), whose sum is σ = 68464704. Its totient is φ = 28641600.

The previous prime is 44396981. The next prime is 44397019. The reversal of 44396991 is 19969344.

It is not a de Polignac number, because 44396991 - 2⁶ = 44396927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44396951) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6330 + ... + 11351.

Almost surely, 2^44396991 is an apocalyptic number.

44396991 is a deficient number, since it is larger than the sum of its proper divisors (24067713).

44396991 is a wasteful number, since it uses less digits than its factorization.

44396991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724 (or 17715 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 44396991 is about 6663.1067078353. The cubic root of 44396991 is about 354.0934111434.

The spelling of 44396991 in words is "forty-four million, three hundred ninety-six thousand, nine hundred ninety-one".