235138739 has 8 divisors (see below), whose sum is σ = 256655280. Its totient is φ = 213645600.

The previous prime is 235138721. The next prime is 235138741. The reversal of 235138739 is 937831532.

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

It is a cyclic number.

It is not a de Polignac number, because 235138739 - 2⁸ = 235138483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 235138696 and 235138705.

It is not an unprimeable number, because it can be changed into a prime (235137739) 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, 20249 + ... + 29669.

It is an arithmetic number, because the mean of its divisors is an integer number (32081910).

Almost surely, 2^235138739 is an apocalyptic number.

235138739 is a deficient number, since it is larger than the sum of its proper divisors (21516541).

235138739 is a wasteful number, since it uses less digits than its factorization.

235138739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11701.

The product of its digits is 136080, while the sum is 41.

The square root of 235138739 is about 15334.2342162887. The cubic root of 235138739 is about 617.2219964042.

The spelling of 235138739 in words is "two hundred thirty-five million, one hundred thirty-eight thousand, seven hundred thirty-nine".