44640401 has 16 divisors (see below), whose sum is σ = 50512896. Its totient is φ = 39141696.

The previous prime is 44640391. The next prime is 44640413. The reversal of 44640401 is 10404644.

It is a cyclic number.

It is not a de Polignac number, because 44640401 - 2¹⁰ = 44639377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44640461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51296 + ... + 52158.

It is an arithmetic number, because the mean of its divisors is an integer number (3157056).

Almost surely, 2^44640401 is an apocalyptic number.

It is an amenable number.

44640401 is a deficient number, since it is larger than the sum of its proper divisors (5872495).

44640401 is a wasteful number, since it uses less digits than its factorization.

44640401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 44640401 is about 6681.3472443812. The cubic root of 44640401 is about 354.7393471181.

The spelling of 44640401 in words is "forty-four million, six hundred forty thousand, four hundred one".