44978940 has 72 divisors (see below), whose sum is σ = 144471600. Its totient is φ = 11288064.

The previous prime is 44978933. The next prime is 44978963. The reversal of 44978940 is 4987944.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4290 + ... + 10409.

It is an arithmetic number, because the mean of its divisors is an integer number (2006550).

Almost surely, 2^44978940 is an apocalyptic number.

It is an amenable number.

44978940 is an abundant number, since it is smaller than the sum of its proper divisors (99492660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44978940 is a wasteful number, since it uses less digits than its factorization.

44978940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14731 (or 14726 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 44978940 is about 6706.6340290790. The cubic root of 44978940 is about 355.6338342551.

The spelling of 44978940 in words is "forty-four million, nine hundred seventy-eight thousand, nine hundred forty".