44978890 has 32 divisors (see below), whose sum is σ = 92975040. Its totient is φ = 15494400.

The previous prime is 44978873. The next prime is 44978891. The reversal of 44978890 is 9887944.

44978890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (44978891) by changing a digit.

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, 8671 + ... + 12850.

It is an arithmetic number, because the mean of its divisors is an integer number (2905470).

Almost surely, 2^44978890 is an apocalyptic number.

44978890 is an abundant number, since it is smaller than the sum of its proper divisors (47996150).

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

44978890 is a wasteful number, since it uses less digits than its factorization.

44978890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21558.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 44978890 is about 6706.6303014256. The cubic root of 44978890 is about 355.6337024772.

The spelling of 44978890 in words is "forty-four million, nine hundred seventy-eight thousand, eight hundred ninety".