44445431 has 4 divisors (see below), whose sum is σ = 44535000. Its totient is φ = 44355864.

The previous prime is 44445419. The next prime is 44445437. The reversal of 44445431 is 13454444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44445431 is a prime.

It is a super-2 number, since 2×44445431² = 3950792673551522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44445394 and 44445403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44445437) 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, 44036 + ... + 45033.

It is an arithmetic number, because the mean of its divisors is an integer number (11133750).

Almost surely, 2^44445431 is an apocalyptic number.

44445431 is a deficient number, since it is larger than the sum of its proper divisors (89569).

44445431 is an equidigital number, since it uses as much as digits as its factorization.

44445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89568.

The product of its digits is 15360, while the sum is 29.

The square root of 44445431 is about 6666.7406579227. The cubic root of 44445431 is about 354.2221439708. Note that the first 3 decimals are identical.

Adding to 44445431 its reverse (13454444), we get a palindrome (57899875).

The spelling of 44445431 in words is "forty-four million, four hundred forty-five thousand, four hundred thirty-one".