44113921 has 4 divisors (see below), whose sum is σ = 44204992. Its totient is φ = 44022852.

The previous prime is 44113913. The next prime is 44113987. The reversal of 44113921 is 12931144.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44113921 - 2³ = 44113913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44113021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44805 + ... + 45778.

It is an arithmetic number, because the mean of its divisors is an integer number (11051248).

It is a Proth number, since it is equal to 5385 ⋅ 2¹³ + 1 and 5385 < 2¹³.

Almost surely, 2^44113921 is an apocalyptic number.

It is an amenable number.

44113921 is a deficient number, since it is larger than the sum of its proper divisors (91071).

44113921 is an equidigital number, since it uses as much as digits as its factorization.

44113921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91070.

The product of its digits is 864, while the sum is 25.

The square root of 44113921 is about 6641.8311481097. The cubic root of 44113921 is about 353.3392533916.

The spelling of 44113921 in words is "forty-four million, one hundred thirteen thousand, nine hundred twenty-one".