44991047 has 4 divisors (see below), whose sum is σ = 45060600. Its totient is φ = 44921496.

The previous prime is 44991043. The next prime is 44991049. The reversal of 44991047 is 74019944.

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 44991047 - 2² = 44991043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44991047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44991041) 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, 33797 + ... + 35102.

It is an arithmetic number, because the mean of its divisors is an integer number (11265150).

Almost surely, 2^44991047 is an apocalyptic number.

44991047 is a deficient number, since it is larger than the sum of its proper divisors (69553).

44991047 is an equidigital number, since it uses as much as digits as its factorization.

44991047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69552.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 44991047 is about 6707.5365820844. The cubic root of 44991047 is about 355.6657400950.

The spelling of 44991047 in words is "forty-four million, nine hundred ninety-one thousand, forty-seven".