44149869 has 6 divisors (see below), whose sum is σ = 63772046. Its totient is φ = 29433240.

The previous prime is 44149837. The next prime is 44149883. The reversal of 44149869 is 96894144.

44149869 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 only one way, i.e., 23328900 + 20820969 = 4830^2 + 4563^2 .

It is not a de Polignac number, because 44149869 - 2⁵ = 44149837 is a prime.

It is a super-2 number, since 2×44149869² = 3898421865434322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44149829) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2452762 + ... + 2452779.

Almost surely, 2^44149869 is an apocalyptic number.

It is an amenable number.

44149869 is a deficient number, since it is larger than the sum of its proper divisors (19622177).

44149869 is a wasteful number, since it uses less digits than its factorization.

44149869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905547 (or 4905544 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 44149869 is about 6644.5367784369. The cubic root of 44149869 is about 353.4352048928.

The spelling of 44149869 in words is "forty-four million, one hundred forty-nine thousand, eight hundred sixty-nine".