2404139 has 2 divisors, whose sum is σ = 2404140. Its totient is φ = 2404138.

The previous prime is 2404111. The next prime is 2404147. The reversal of 2404139 is 9314042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2404139 - 2⁸ = 2403883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2404159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202069 + 1202070.

It is an arithmetic number, because the mean of its divisors is an integer number (1202070).

2^2404139 is an apocalyptic number.

2404139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2404139 is an equidigital number, since it uses as much as digits as its factorization.

2404139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2404139 is about 1550.5286195359. The cubic root of 2404139 is about 133.9635120078.

Subtracting 2404139 from its reverse (9314042), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2404139 in words is "two million, four hundred four thousand, one hundred thirty-nine".