44121019 has 2 divisors, whose sum is σ = 44121020. Its totient is φ = 44121018.

The previous prime is 44121017. The next prime is 44121037. The reversal of 44121019 is 91012144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44121019 - 2¹ = 44121017 is a prime.

It is a super-2 number, since 2×44121019² = 3893328635196722, which contains 22 as substring.

Together with 44121017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44121017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22060509 + 22060510.

It is an arithmetic number, because the mean of its divisors is an integer number (22060510).

Almost surely, 2^44121019 is an apocalyptic number.

44121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

44121019 is an equidigital number, since it uses as much as digits as its factorization.

44121019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 44121019 is about 6642.3654672112. The cubic root of 44121019 is about 353.3582033244.

The spelling of 44121019 in words is "forty-four million, one hundred twenty-one thousand, nineteen".