44168421 has 16 divisors (see below), whose sum is σ = 66461760. Its totient is φ = 25845120.

The previous prime is 44168413. The next prime is 44168437. The reversal of 44168421 is 12486144.

It is not a de Polignac number, because 44168421 - 2³ = 44168413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44168401) 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, 22120 + ... + 24033.

It is an arithmetic number, because the mean of its divisors is an integer number (4153860).

Almost surely, 2^44168421 is an apocalyptic number.

It is an amenable number.

44168421 is a deficient number, since it is larger than the sum of its proper divisors (22293339).

44168421 is a wasteful number, since it uses less digits than its factorization.

44168421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46196.

The product of its digits is 6144, while the sum is 30.

The square root of 44168421 is about 6645.9326659243. The cubic root of 44168421 is about 353.4847030519.

The spelling of 44168421 in words is "forty-four million, one hundred sixty-eight thousand, four hundred twenty-one".