234749257 has 4 divisors (see below), whose sum is σ = 237028480. Its totient is φ = 232470036.

The previous prime is 234749233. The next prime is 234749261. The reversal of 234749257 is 752947432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234749257 - 2⁷ = 234749129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234749357) 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, 1139457 + ... + 1139662.

It is an arithmetic number, because the mean of its divisors is an integer number (59257120).

Almost surely, 2^234749257 is an apocalyptic number.

It is an amenable number.

234749257 is a deficient number, since it is larger than the sum of its proper divisors (2279223).

234749257 is a wasteful number, since it uses less digits than its factorization.

234749257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279222.

The product of its digits is 423360, while the sum is 43.

The square root of 234749257 is about 15321.5291991367. The cubic root of 234749257 is about 616.8810208148.

The spelling of 234749257 in words is "two hundred thirty-four million, seven hundred forty-nine thousand, two hundred fifty-seven".