609139877 has 2 divisors, whose sum is σ = 609139878. Its totient is φ = 609139876.

The previous prime is 609139799. The next prime is 609139901. The reversal of 609139877 is 778931906.

609139877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608658241 + 481636 = 24671^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 609139877 - 2²⁶ = 542031013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609132877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304569938 + 304569939.

It is an arithmetic number, because the mean of its divisors is an integer number (304569939).

Almost surely, 2^609139877 is an apocalyptic number.

It is an amenable number.

609139877 is a deficient number, since it is larger than the sum of its proper divisors (1).

609139877 is an equidigital number, since it uses as much as digits as its factorization.

609139877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 609139877 is about 24680.7592468303. The cubic root of 609139877 is about 847.6938071630.

It can be divided in two parts, 609139 and 877, that added together give a palindrome (610016).

The spelling of 609139877 in words is "six hundred nine million, one hundred thirty-nine thousand, eight hundred seventy-seven".