44919813 has 16 divisors (see below), whose sum is σ = 62216640. Its totient is φ = 28803456.

The previous prime is 44919793. The next prime is 44919839. The reversal of 44919813 is 31891944.

It is not a de Polignac number, because 44919813 - 2¹⁷ = 44788741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44919863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606 + ... + 12152.

It is an arithmetic number, because the mean of its divisors is an integer number (3888540).

Almost surely, 2^44919813 is an apocalyptic number.

It is an amenable number.

44919813 is a deficient number, since it is larger than the sum of its proper divisors (17296827).

44919813 is a wasteful number, since it uses less digits than its factorization.

44919813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676.

The product of its digits is 31104, while the sum is 39.

The square root of 44919813 is about 6702.2244814688. The cubic root of 44919813 is about 355.4779332759.

The spelling of 44919813 in words is "forty-four million, nine hundred nineteen thousand, eight hundred thirteen".