44666891 has 6 divisors (see below), whose sum is σ = 47141892. Its totient is φ = 42315660.

The previous prime is 44666887. The next prime is 44666911. The reversal of 44666891 is 19866644.

It is not a de Polignac number, because 44666891 - 2² = 44666887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44666861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61505 + ... + 62226.

It is an arithmetic number, because the mean of its divisors is an integer number (7856982).

Almost surely, 2^44666891 is an apocalyptic number.

44666891 is a deficient number, since it is larger than the sum of its proper divisors (2475001).

44666891 is a wasteful number, since it uses less digits than its factorization.

44666891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123769 (or 123750 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 44666891 is about 6683.3293349946. The cubic root of 44666891 is about 354.8095017086.

The spelling of 44666891 in words is "forty-four million, six hundred sixty-six thousand, eight hundred ninety-one".