34857239 has 4 divisors (see below), whose sum is σ = 34869240. Its totient is φ = 34845240.

The previous prime is 34857233. The next prime is 34857247. The reversal of 34857239 is 93275843.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93275843 = 263 ⋅354661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34857239 is a prime.

It is a super-2 number, since 2×34857239² = 2430054221406242, 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 = 34857196 and 34857205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34857233) 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, 1397 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (8717310).

Almost surely, 2^34857239 is an apocalyptic number.

34857239 is a deficient number, since it is larger than the sum of its proper divisors (12001).

34857239 is an equidigital number, since it uses as much as digits as its factorization.

34857239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000.

The product of its digits is 181440, while the sum is 41.

The square root of 34857239 is about 5904.0019478317. The cubic root of 34857239 is about 326.6612814374.

The spelling of 34857239 in words is "thirty-four million, eight hundred fifty-seven thousand, two hundred thirty-nine".