229193691 has 4 divisors (see below), whose sum is σ = 305591592. Its totient is φ = 152795792.

The previous prime is 229193681. The next prime is 229193747. The reversal of 229193691 is 196391922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 229193691 - 2⁵ = 229193659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229193621) 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, 38198946 + ... + 38198951.

It is an arithmetic number, because the mean of its divisors is an integer number (76397898).

Almost surely, 2^229193691 is an apocalyptic number.

229193691 is a deficient number, since it is larger than the sum of its proper divisors (76397901).

229193691 is an equidigital number, since it uses as much as digits as its factorization.

229193691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76397900.

The product of its digits is 52488, while the sum is 42.

The square root of 229193691 is about 15139.1443285280. The cubic root of 229193691 is about 611.9757588972.

The spelling of 229193691 in words is "two hundred twenty-nine million, one hundred ninety-three thousand, six hundred ninety-one".