44402991 has 8 divisors (see below), whose sum is σ = 59779200. Its totient is φ = 29314392.

The previous prime is 44402989. The next prime is 44402999. The reversal of 44402991 is 19920444.

44402991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44402991 - 2¹ = 44402989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44402999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71541 + ... + 72158.

It is an arithmetic number, because the mean of its divisors is an integer number (7472400).

Almost surely, 2^44402991 is an apocalyptic number.

44402991 is a deficient number, since it is larger than the sum of its proper divisors (15376209).

44402991 is a wasteful number, since it uses less digits than its factorization.

44402991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143805.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 44402991 is about 6663.5569330501. The cubic root of 44402991 is about 354.1093616596.

The spelling of 44402991 in words is "forty-four million, four hundred two thousand, nine hundred ninety-one".