44137890 has 24 divisors (see below), whose sum is σ = 114758748. Its totient is φ = 11770080.

The previous prime is 44137883. The next prime is 44137903. The reversal of 44137890 is 9873144.

It is a happy number.

44137890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 1718721 = 6513^2 + 1311^2 .

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 11 ways as a sum of consecutive naturals, for example, 245121 + ... + 245300.

Almost surely, 2^44137890 is an apocalyptic number.

44137890 is an abundant number, since it is smaller than the sum of its proper divisors (70620858).

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

44137890 is a wasteful number, since it uses less digits than its factorization.

44137890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490434 (or 490431 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 44137890 is about 6643.6353000447. The cubic root of 44137890 is about 353.4032366342.

The spelling of 44137890 in words is "forty-four million, one hundred thirty-seven thousand, eight hundred ninety".