44431890 has 32 divisors (see below), whose sum is σ = 106868160. Its totient is φ = 11822784.

The previous prime is 44431889. The next prime is 44431903. The reversal of 44431890 is 9813444.

It is a happy number.

44431890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15381 + ... + 18039.

It is an arithmetic number, because the mean of its divisors is an integer number (3339630).

Almost surely, 2^44431890 is an apocalyptic number.

44431890 is an abundant number, since it is smaller than the sum of its proper divisors (62436270).

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

44431890 is a wasteful number, since it uses less digits than its factorization.

44431890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 44431890 is about 6665.7250168305. The cubic root of 44431890 is about 354.1861672000.

The spelling of 44431890 in words is "forty-four million, four hundred thirty-one thousand, eight hundred ninety".