44991983 has 4 divisors (see below), whose sum is σ = 45010680. Its totient is φ = 44973288.

The previous prime is 44991977. The next prime is 44992007. The reversal of 44991983 is 38919944.

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 44991983 - 2¹⁴ = 44975599 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 (44991913) 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, 5093 + ... + 10766.

It is an arithmetic number, because the mean of its divisors is an integer number (11252670).

Almost surely, 2^44991983 is an apocalyptic number.

44991983 is a deficient number, since it is larger than the sum of its proper divisors (18697).

44991983 is a wasteful number, since it uses less digits than its factorization.

44991983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18696.

The product of its digits is 279936, while the sum is 47.

The square root of 44991983 is about 6707.6063539835. The cubic root of 44991983 is about 355.6682065178.

The spelling of 44991983 in words is "forty-four million, nine hundred ninety-one thousand, nine hundred eighty-three".