3129859 has 2 divisors, whose sum is σ = 3129860. Its totient is φ = 3129858.

The previous prime is 3129839. The next prime is 3129911. The reversal of 3129859 is 9589213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3129859 - 2⁵ = 3129827 is a prime.

It is not a weakly prime, because it can be changed into another prime (3129839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564929 + 1564930.

It is an arithmetic number, because the mean of its divisors is an integer number (1564930).

Almost surely, 2^3129859 is an apocalyptic number.

3129859 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129859 is an equidigital number, since it uses as much as digits as its factorization.

3129859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 3129859 is about 1769.1407518906. The cubic root of 3129859 is about 146.2766226159.

It can be divided in two parts, 31 and 29859, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 3129859 in words is "three million, one hundred twenty-nine thousand, eight hundred fifty-nine".