235849139 has 2 divisors, whose sum is σ = 235849140. Its totient is φ = 235849138.

The previous prime is 235849129. The next prime is 235849181. The reversal of 235849139 is 931948532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 235849139 - 2⁴ = 235849123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 235849139.

It is not a weakly prime, because it can be changed into another prime (235849129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117924569 + 117924570.

It is an arithmetic number, because the mean of its divisors is an integer number (117924570).

Almost surely, 2^235849139 is an apocalyptic number.

235849139 is a deficient number, since it is larger than the sum of its proper divisors (1).

235849139 is an equidigital number, since it uses as much as digits as its factorization.

235849139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 235849139 is about 15357.3806034753. The cubic root of 235849139 is about 617.8429541636.

It can be divided in two parts, 23584 and 9139, that added together give a palindrome (32723).

The spelling of 235849139 in words is "two hundred thirty-five million, eight hundred forty-nine thousand, one hundred thirty-nine".