44904991 has 2 divisors, whose sum is σ = 44904992. Its totient is φ = 44904990.

The previous prime is 44904989. The next prime is 44904997. The reversal of 44904991 is 19940944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44904991 - 2¹ = 44904989 is a prime.

Together with 44904989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44904997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22452495 + 22452496.

It is an arithmetic number, because the mean of its divisors is an integer number (22452496).

Almost surely, 2^44904991 is an apocalyptic number.

44904991 is a deficient number, since it is larger than the sum of its proper divisors (1).

44904991 is an equidigital number, since it uses as much as digits as its factorization.

44904991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 44904991 is about 6701.1186379589. The cubic root of 44904991 is about 355.4388304599.

The spelling of 44904991 in words is "forty-four million, nine hundred four thousand, nine hundred ninety-one".