444944890 has 48 divisors (see below), whose sum is σ = 905033088. Its totient is φ = 157130688.

The previous prime is 444944861. The next prime is 444944897. The reversal of 444944890 is 98449444.

It is a super-2 number, since 2×444944890² = 395951910274224200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 444944890.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444944897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33147 + ... + 44593.

It is an arithmetic number, because the mean of its divisors is an integer number (18854856).

Almost surely, 2^444944890 is an apocalyptic number.

444944890 is an abundant number, since it is smaller than the sum of its proper divisors (460088198).

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

444944890 is a wasteful number, since it uses less digits than its factorization.

444944890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503 (or 11490 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 444944890 is about 21093.7168370110. The cubic root of 444944890 is about 763.4291545053.

The spelling of 444944890 in words is "four hundred forty-four million, nine hundred forty-four thousand, eight hundred ninety".