44668509 has 8 divisors (see below), whose sum is σ = 61167840. Its totient is φ = 28974096.

The previous prime is 44668493. The next prime is 44668517. The reversal of 44668509 is 90586644.

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

It is not a de Polignac number, because 44668509 - 2⁴ = 44668493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44668609) 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, 201099 + ... + 201320.

It is an arithmetic number, because the mean of its divisors is an integer number (7645980).

Almost surely, 2^44668509 is an apocalyptic number.

It is an amenable number.

44668509 is a deficient number, since it is larger than the sum of its proper divisors (16499331).

44668509 is a wasteful number, since it uses less digits than its factorization.

44668509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402459.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 44668509 is about 6683.4503813524. The cubic root of 44668509 is about 354.8137858277.

The spelling of 44668509 in words is "forty-four million, six hundred sixty-eight thousand, five hundred nine".