2905139 has 2 divisors, whose sum is σ = 2905140. Its totient is φ = 2905138.

The previous prime is 2905109. The next prime is 2905151. The reversal of 2905139 is 9315092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2905139 - 2⁸ = 2904883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2905109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452569 + 1452570.

It is an arithmetic number, because the mean of its divisors is an integer number (1452570).

2^2905139 is an apocalyptic number.

2905139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2905139 is an equidigital number, since it uses as much as digits as its factorization.

2905139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2905139 is about 1704.4468310863. The cubic root of 2905139 is about 142.6884999000.

The spelling of 2905139 in words is "two million, nine hundred five thousand, one hundred thirty-nine".