609882139 has 2 divisors, whose sum is σ = 609882140. Its totient is φ = 609882138.

The previous prime is 609882113. The next prime is 609882271. The reversal of 609882139 is 931288906.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609882139 - 2¹⁵ = 609849371 is a prime.

It is not a weakly prime, because it can be changed into another prime (609882109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304941069 + 304941070.

It is an arithmetic number, because the mean of its divisors is an integer number (304941070).

Almost surely, 2^609882139 is an apocalyptic number.

609882139 is a deficient number, since it is larger than the sum of its proper divisors (1).

609882139 is an equidigital number, since it uses as much as digits as its factorization.

609882139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 609882139 is about 24695.7919289907. The cubic root of 609882139 is about 848.0379839956.

The spelling of 609882139 in words is "six hundred nine million, eight hundred eighty-two thousand, one hundred thirty-nine".