44289391 has 4 divisors (see below), whose sum is σ = 44364672. Its totient is φ = 44214112.

The previous prime is 44289347. The next prime is 44289419. The reversal of 44289391 is 19398244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44289391 - 2⁷ = 44289263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44289331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36751 + ... + 37936.

It is an arithmetic number, because the mean of its divisors is an integer number (11091168).

Almost surely, 2^44289391 is an apocalyptic number.

44289391 is a deficient number, since it is larger than the sum of its proper divisors (75281).

44289391 is an equidigital number, since it uses as much as digits as its factorization.

44289391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75280.

The product of its digits is 62208, while the sum is 40.

The square root of 44289391 is about 6655.0274980649. The cubic root of 44289391 is about 353.8071209271.

The spelling of 44289391 in words is "forty-four million, two hundred eighty-nine thousand, three hundred ninety-one".