44468639 has 4 divisors (see below), whose sum is σ = 44626056. Its totient is φ = 44311224.

The previous prime is 44468587. The next prime is 44468657. The reversal of 44468639 is 93686444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44468639 - 2¹⁶ = 44403103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44468639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44468689) 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, 78284 + ... + 78849.

It is an arithmetic number, because the mean of its divisors is an integer number (11156514).

Almost surely, 2^44468639 is an apocalyptic number.

44468639 is a deficient number, since it is larger than the sum of its proper divisors (157417).

44468639 is a wasteful number, since it uses less digits than its factorization.

44468639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157416.

The product of its digits is 497664, while the sum is 44.

The square root of 44468639 is about 6668.4810114448. The cubic root of 44468639 is about 354.2837877803.

The spelling of 44468639 in words is "forty-four million, four hundred sixty-eight thousand, six hundred thirty-nine".