44947890 has 96 divisors (see below), whose sum is σ = 129061296. Its totient is φ = 10782720.

The previous prime is 44947879. The next prime is 44947907. The reversal of 44947890 is 9874944.

44947890 is a `hidden beast` number, since 4 + 494 + 78 + 90 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 71289 + 44876601 = 267^2 + 6699^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47502 + ... + 48438.

Almost surely, 2^44947890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44947890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64530648).

44947890 is an abundant number, since it is smaller than the sum of its proper divisors (84113406).

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

44947890 is a wasteful number, since it uses less digits than its factorization.

44947890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 1001 counting only the distinct ones).

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

The square root of 44947890 is about 6704.3187573384. The cubic root of 44947890 is about 355.5519813370.

The spelling of 44947890 in words is "forty-four million, nine hundred forty-seven thousand, eight hundred ninety".