44424139 has 2 divisors, whose sum is σ = 44424140. Its totient is φ = 44424138.

The previous prime is 44424137. The next prime is 44424167. The reversal of 44424139 is 93142444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44424139 - 2¹ = 44424137 is a prime.

Together with 44424137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 44424139.

It is not a weakly prime, because it can be changed into another prime (44424131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22212069 + 22212070.

It is an arithmetic number, because the mean of its divisors is an integer number (22212070).

Almost surely, 2^44424139 is an apocalyptic number.

44424139 is a deficient number, since it is larger than the sum of its proper divisors (1).

44424139 is an equidigital number, since it uses as much as digits as its factorization.

44424139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 44424139 is about 6665.1435843499. The cubic root of 44424139 is about 354.1655704572.

The spelling of 44424139 in words is "forty-four million, four hundred twenty-four thousand, one hundred thirty-nine".