441649940 has 12 divisors (see below), whose sum is σ = 927464916. Its totient is φ = 176659968.

The previous prime is 441649937. The next prime is 441649969. The reversal of 441649940 is 49946144.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94051204 + 347598736 = 9698^2 + 18644^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11041229 + ... + 11041268.

It is an arithmetic number, because the mean of its divisors is an integer number (77288743).

Almost surely, 2^441649940 is an apocalyptic number.

It is an amenable number.

441649940 is an abundant number, since it is smaller than the sum of its proper divisors (485814976).

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

441649940 is a wasteful number, since it uses less digits than its factorization.

441649940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22082506 (or 22082504 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 441649940 is about 21015.4690644772. The cubic root of 441649940 is about 761.5400098284.

The spelling of 441649940 in words is "four hundred forty-one million, six hundred forty-nine thousand, nine hundred forty".