44931990 has 64 divisors (see below), whose sum is σ = 112349952. Its totient is φ = 11491200.

The previous prime is 44931973. The next prime is 44932001. The reversal of 44931990 is 9913944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78405 + ... + 78975.

It is an arithmetic number, because the mean of its divisors is an integer number (1755468).

Almost surely, 2^44931990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44931990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56174976).

44931990 is an abundant number, since it is smaller than the sum of its proper divisors (67417962).

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

44931990 is a wasteful number, since it uses less digits than its factorization.

44931990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 44931990 is about 6703.1328496458. The cubic root of 44931990 is about 355.5100517215.

The spelling of 44931990 in words is "forty-four million, nine hundred thirty-one thousand, nine hundred ninety".