613398239 has 4 divisors (see below), whose sum is σ = 618826656. Its totient is φ = 607969824.

The previous prime is 613398229. The next prime is 613398251. The reversal of 613398239 is 932893316.

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 613398239 - 2¹² = 613394143 is a prime.

It is a super-2 number, since 2×613398239² = 752514799216602242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 613398239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613398229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714039 + ... + 2714264.

It is an arithmetic number, because the mean of its divisors is an integer number (154706664).

Almost surely, 2^613398239 is an apocalyptic number.

613398239 is a deficient number, since it is larger than the sum of its proper divisors (5428417).

613398239 is a wasteful number, since it uses less digits than its factorization.

613398239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428416.

The product of its digits is 209952, while the sum is 44.

The square root of 613398239 is about 24766.8778613696. The cubic root of 613398239 is about 849.6645684550.

The spelling of 613398239 in words is "six hundred thirteen million, three hundred ninety-eight thousand, two hundred thirty-nine".