44684639 has 4 divisors (see below), whose sum is σ = 45635424. Its totient is φ = 43733856.

The previous prime is 44684617. The next prime is 44684663. The reversal of 44684639 is 93648644.

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 44684639 - 2²⁰ = 43636063 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 44684639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44684039) 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, 475322 + ... + 475415.

It is an arithmetic number, because the mean of its divisors is an integer number (11408856).

Almost surely, 2^44684639 is an apocalyptic number.

44684639 is a deficient number, since it is larger than the sum of its proper divisors (950785).

44684639 is an equidigital number, since it uses as much as digits as its factorization.

44684639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950784.

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

The square root of 44684639 is about 6684.6569844682. The cubic root of 44684639 is about 354.8564889740.

The spelling of 44684639 in words is "forty-four million, six hundred eighty-four thousand, six hundred thirty-nine".