44390861 has 8 divisors (see below), whose sum is σ = 45693024. Its totient is φ = 43094160.

The previous prime is 44390831. The next prime is 44390869. The reversal of 44390861 is 16809344.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44390861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44390869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19766 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (5711628).

Almost surely, 2^44390861 is an apocalyptic number.

It is an amenable number.

44390861 is a deficient number, since it is larger than the sum of its proper divisors (1302163).

44390861 is a wasteful number, since it uses less digits than its factorization.

44390861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 44390861 is about 6662.6466963212. The cubic root of 44390861 is about 354.0771135486.

The spelling of 44390861 in words is "forty-four million, three hundred ninety thousand, eight hundred sixty-one".