44143891 has 8 divisors (see below), whose sum is σ = 48437424. Its totient is φ = 39897120.

The previous prime is 44143889. The next prime is 44143901. The reversal of 44143891 is 19834144.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44143891 - 2¹ = 44143889 is a prime.

It is a super-2 number, since 2×44143891² = 3897366225239762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44143811) 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 7 ways as a sum of consecutive naturals, for example, 9696 + ... + 13501.

It is an arithmetic number, because the mean of its divisors is an integer number (6054678).

Almost surely, 2^44143891 is an apocalyptic number.

44143891 is a deficient number, since it is larger than the sum of its proper divisors (4293533).

44143891 is a wasteful number, since it uses less digits than its factorization.

44143891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23381.

The product of its digits is 13824, while the sum is 34.

The square root of 44143891 is about 6644.0869199612. The cubic root of 44143891 is about 353.4192521764.

The spelling of 44143891 in words is "forty-four million, one hundred forty-three thousand, eight hundred ninety-one".