44401986 has 16 divisors (see below), whose sum is σ = 98671200. Its totient is φ = 14800644.

The previous prime is 44401963. The next prime is 44401991. The reversal of 44401986 is 68910444.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44401986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411076 + ... + 411183.

It is an arithmetic number, because the mean of its divisors is an integer number (6166950).

Almost surely, 2^44401986 is an apocalyptic number.

44401986 is an abundant number, since it is smaller than the sum of its proper divisors (54269214).

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

44401986 is a wasteful number, since it uses less digits than its factorization.

44401986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822270 (or 822264 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 44401986 is about 6663.4815224476. The cubic root of 44401986 is about 354.1066900483.

The spelling of 44401986 in words is "forty-four million, four hundred one thousand, nine hundred eighty-six".