2979439 has 2 divisors, whose sum is σ = 2979440. Its totient is φ = 2979438.

The previous prime is 2979421. The next prime is 2979463. The reversal of 2979439 is 9349792.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2979439 - 2⁵ = 2979407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2979395 and 2979404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2979419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489719 + 1489720.

It is an arithmetic number, because the mean of its divisors is an integer number (1489720).

2^2979439 is an apocalyptic number.

2979439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979439 is an equidigital number, since it uses as much as digits as its factorization.

2979439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 2979439 is about 1726.1051532279. The cubic root of 2979439 is about 143.8947114866.

It can be divided in two parts, 29 and 79439, that multiplied together give a triangular number (2303731 = T₂₁₄₆).

The spelling of 2979439 in words is "two million, nine hundred seventy-nine thousand, four hundred thirty-nine".