44145439 has 4 divisors (see below), whose sum is σ = 47541256. Its totient is φ = 40749624.

The previous prime is 44145433. The next prime is 44145461. The reversal of 44145439 is 93454144.

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 44145439 - 2⁵ = 44145407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44145433) 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, 1697889 + ... + 1697914.

It is an arithmetic number, because the mean of its divisors is an integer number (11885314).

Almost surely, 2^44145439 is an apocalyptic number.

44145439 is a deficient number, since it is larger than the sum of its proper divisors (3395817).

44145439 is a wasteful number, since it uses less digits than its factorization.

44145439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395816.

The product of its digits is 34560, while the sum is 34.

The square root of 44145439 is about 6644.2034135026. The cubic root of 44145439 is about 353.4233832622.

The spelling of 44145439 in words is "forty-four million, one hundred forty-five thousand, four hundred thirty-nine".