44991653 has 8 divisors (see below), whose sum is σ = 52468800. Its totient is φ = 38563980.

The previous prime is 44991649. The next prime is 44991697. The reversal of 44991653 is 35619944.

It is not a de Polignac number, because 44991653 - 2² = 44991649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44991653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44991553) 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, 65243 + ... + 65928.

It is an arithmetic number, because the mean of its divisors is an integer number (6558600).

Almost surely, 2^44991653 is an apocalyptic number.

It is an amenable number.

44991653 is a deficient number, since it is larger than the sum of its proper divisors (7477147).

44991653 is an equidigital number, since it uses as much as digits as its factorization.

44991653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131192 (or 131178 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 44991653 is about 6707.5817549993. The cubic root of 44991653 is about 355.6673369495.

The spelling of 44991653 in words is "forty-four million, nine hundred ninety-one thousand, six hundred fifty-three".