44400431 has 4 divisors (see below), whose sum is σ = 45063192. Its totient is φ = 43737672.

The previous prime is 44400403. The next prime is 44400443. The reversal of 44400431 is 13400444.

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 44400431 - 2¹⁴ = 44384047 is a prime.

It is a super-2 number, since 2×44400431² = 3942796545971522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44400331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331280 + ... + 331413.

It is an arithmetic number, because the mean of its divisors is an integer number (11265798).

Almost surely, 2^44400431 is an apocalyptic number.

44400431 is a deficient number, since it is larger than the sum of its proper divisors (662761).

44400431 is an equidigital number, since it uses as much as digits as its factorization.

44400431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662760.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44400431 is about 6663.3648406792. The cubic root of 44400431 is about 354.1025562818.

Adding to 44400431 its reverse (13400444), we get a palindrome (57800875).

The spelling of 44400431 in words is "forty-four million, four hundred thousand, four hundred thirty-one".