44393897 has 4 divisors (see below), whose sum is σ = 45338496. Its totient is φ = 43449300.

The previous prime is 44393879. The next prime is 44393911. The reversal of 44393897 is 79839344.

44393897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44393897 - 2¹² = 44389801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 944551 = 44393897 / (4 + 4 + 3 + 9 + 3 + 8 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44393837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472229 + ... + 472322.

It is an arithmetic number, because the mean of its divisors is an integer number (11334624).

Almost surely, 2^44393897 is an apocalyptic number.

44393897 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

44393897 is a deficient number, since it is larger than the sum of its proper divisors (944599).

44393897 is an equidigital number, since it uses as much as digits as its factorization.

44393897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944598.

The product of its digits is 653184, while the sum is 47.

The square root of 44393897 is about 6662.8745298107. The cubic root of 44393897 is about 354.0851854323.

The spelling of 44393897 in words is "forty-four million, three hundred ninety-three thousand, eight hundred ninety-seven".