655253939 has 4 divisors (see below), whose sum is σ = 655371600. Its totient is φ = 655136280.

The previous prime is 655253897. The next prime is 655253953. The reversal of 655253939 is 939352556.

655253939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 655253939 - 2¹² = 655249843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655253893 and 655253902.

It is not an unprimeable number, because it can be changed into a prime (655253539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50039 + ... + 61760.

It is an arithmetic number, because the mean of its divisors is an integer number (163842900).

Almost surely, 2^655253939 is an apocalyptic number.

655253939 is a deficient number, since it is larger than the sum of its proper divisors (117661).

655253939 is a wasteful number, since it uses less digits than its factorization.

655253939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117660.

The product of its digits is 1093500, while the sum is 47.

The square root of 655253939 is about 25597.9284122759. The cubic root of 655253939 is about 868.5667770599.

The spelling of 655253939 in words is "six hundred fifty-five million, two hundred fifty-three thousand, nine hundred thirty-nine".