44091663 has 32 divisors (see below), whose sum is σ = 73807872. Its totient is φ = 22744800.

The previous prime is 44091661. The next prime is 44091689. The reversal of 44091663 is 36619044.

It is not a de Polignac number, because 44091663 - 2¹ = 44091661 is a prime.

It is a super-2 number, since 2×44091663² = 3888149492211138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44091661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37068 + ... + 38238.

It is an arithmetic number, because the mean of its divisors is an integer number (2306496).

Almost surely, 2^44091663 is an apocalyptic number.

44091663 is a deficient number, since it is larger than the sum of its proper divisors (29716209).

44091663 is a wasteful number, since it uses less digits than its factorization.

44091663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 44091663 is about 6640.1553445684. The cubic root of 44091663 is about 353.2798167632.

The spelling of 44091663 in words is "forty-four million, ninety-one thousand, six hundred sixty-three".