44472509 has 2 divisors, whose sum is σ = 44472510. Its totient is φ = 44472508.

The previous prime is 44472503. The next prime is 44472541. The reversal of 44472509 is 90527444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 1570009 = 6550^2 + 1253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44472509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44472503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22236254 + 22236255.

It is an arithmetic number, because the mean of its divisors is an integer number (22236255).

Almost surely, 2^44472509 is an apocalyptic number.

It is an amenable number.

44472509 is a deficient number, since it is larger than the sum of its proper divisors (1).

44472509 is an equidigital number, since it uses as much as digits as its factorization.

44472509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 44472509 is about 6668.7711761613. The cubic root of 44472509 is about 354.2940649743.

The spelling of 44472509 in words is "forty-four million, four hundred seventy-two thousand, five hundred nine".