2445139 has 2 divisors, whose sum is σ = 2445140. Its totient is φ = 2445138.

The previous prime is 2445119. The next prime is 2445173. The reversal of 2445139 is 9315442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2445139 - 2⁷ = 2445011 is a prime.

It is a Chen prime.

2445139 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2445119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222569 + 1222570.

It is an arithmetic number, because the mean of its divisors is an integer number (1222570).

2^2445139 is an apocalyptic number.

2445139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445139 is an equidigital number, since it uses as much as digits as its factorization.

2445139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 2445139 is about 1563.6940237783. The cubic root of 2445139 is about 134.7207579597.

The spelling of 2445139 in words is "two million, four hundred forty-five thousand, one hundred thirty-nine".