44919139 has 2 divisors, whose sum is σ = 44919140. Its totient is φ = 44919138.

The previous prime is 44919137. The next prime is 44919167. The reversal of 44919139 is 93191944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44919139 - 2¹ = 44919137 is a prime.

Together with 44919137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44919131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22459569 + 22459570.

It is an arithmetic number, because the mean of its divisors is an integer number (22459570).

Almost surely, 2^44919139 is an apocalyptic number.

44919139 is a deficient number, since it is larger than the sum of its proper divisors (1).

44919139 is an equidigital number, since it uses as much as digits as its factorization.

44919139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 44919139 is about 6702.1741994669. The cubic root of 44919139 is about 355.4761553424.

The spelling of 44919139 in words is "forty-four million, nine hundred nineteen thousand, one hundred thirty-nine".