247330839 has 8 divisors (see below), whose sum is σ = 376885120. Its totient is φ = 141331896.

The previous prime is 247330817. The next prime is 247330859. The reversal of 247330839 is 938033742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247330839 - 2¹⁵ = 247298071 is a prime.

It is a super-2 number, since 2×247330839² = 122345087840887842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247330797 and 247330806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247330859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5888809 + ... + 5888850.

It is an arithmetic number, because the mean of its divisors is an integer number (47110640).

Almost surely, 2^247330839 is an apocalyptic number.

247330839 is a deficient number, since it is larger than the sum of its proper divisors (129554281).

247330839 is a wasteful number, since it uses less digits than its factorization.

247330839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11777669.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 247330839 is about 15726.7555140913. The cubic root of 247330839 is about 627.7105436777.

The spelling of 247330839 in words is "two hundred forty-seven million, three hundred thirty thousand, eight hundred thirty-nine".