233479749 has 4 divisors (see below), whose sum is σ = 311306336. Its totient is φ = 155653164.

The previous prime is 233479711. The next prime is 233479759. The reversal of 233479749 is 947974332.

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 not a de Polignac number, because 233479749 - 2⁷ = 233479621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233479698 and 233479707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233479709) 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, 38913289 + ... + 38913294.

It is an arithmetic number, because the mean of its divisors is an integer number (77826584).

Almost surely, 2^233479749 is an apocalyptic number.

It is an amenable number.

233479749 is a deficient number, since it is larger than the sum of its proper divisors (77826587).

233479749 is an equidigital number, since it uses as much as digits as its factorization.

233479749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77826586.

The product of its digits is 1143072, while the sum is 48.

The square root of 233479749 is about 15280.0441426064. The cubic root of 233479749 is about 615.7669933456.

The spelling of 233479749 in words is "two hundred thirty-three million, four hundred seventy-nine thousand, seven hundred forty-nine".