44625981 has 4 divisors (see below), whose sum is σ = 59501312. Its totient is φ = 29750652.

The previous prime is 44625967. The next prime is 44625991. The reversal of 44625981 is 18952644.

44625981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44625981 - 2⁷ = 44625853 is a prime.

It is a super-2 number, since 2×44625981² = 3982956360424722, 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 (44625961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7437661 + ... + 7437666.

It is an arithmetic number, because the mean of its divisors is an integer number (14875328).

Almost surely, 2^44625981 is an apocalyptic number.

It is an amenable number.

44625981 is a deficient number, since it is larger than the sum of its proper divisors (14875331).

44625981 is a wasteful number, since it uses less digits than its factorization.

44625981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14875330.

The product of its digits is 69120, while the sum is 39.

The square root of 44625981 is about 6680.2680335448. The cubic root of 44625981 is about 354.7011463541.

The spelling of 44625981 in words is "forty-four million, six hundred twenty-five thousand, nine hundred eighty-one".