44135861 has 16 divisors (see below), whose sum is σ = 55175040. Its totient is φ = 34298880.

The previous prime is 44135849. The next prime is 44135863. The reversal of 44135861 is 16853144.

It is not a de Polignac number, because 44135861 - 2¹⁰ = 44134837 is a prime.

It is a super-2 number, since 2×44135861² = 3895948452422642, 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 (44135863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47045 + ... + 47973.

It is an arithmetic number, because the mean of its divisors is an integer number (3448440).

Almost surely, 2^44135861 is an apocalyptic number.

It is an amenable number.

44135861 is a deficient number, since it is larger than the sum of its proper divisors (11039179).

44135861 is a wasteful number, since it uses less digits than its factorization.

44135861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its digits is 11520, while the sum is 32.

The square root of 44135861 is about 6643.4825957475. The cubic root of 44135861 is about 353.3978212858.

The spelling of 44135861 in words is "forty-four million, one hundred thirty-five thousand, eight hundred sixty-one".