444916139 has 2 divisors, whose sum is σ = 444916140. Its totient is φ = 444916138.

The previous prime is 444916111. The next prime is 444916169. The reversal of 444916139 is 931619444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444916139 - 2¹² = 444912043 is a prime.

It is a super-3 number, since 3×444916139³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 444916096 and 444916105.

It is not a weakly prime, because it can be changed into another prime (444916169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222458069 + 222458070.

It is an arithmetic number, because the mean of its divisors is an integer number (222458070).

Almost surely, 2^444916139 is an apocalyptic number.

444916139 is a deficient number, since it is larger than the sum of its proper divisors (1).

444916139 is an equidigital number, since it uses as much as digits as its factorization.

444916139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 444916139 is about 21093.0353197448. The cubic root of 444916139 is about 763.4127106528.

The spelling of 444916139 in words is "four hundred forty-four million, nine hundred sixteen thousand, one hundred thirty-nine".