229644091 has 2 divisors, whose sum is σ = 229644092. Its totient is φ = 229644090.

The previous prime is 229644083. The next prime is 229644097. The reversal of 229644091 is 190446922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229644091 - 2³ = 229644083 is a prime.

It is equal to p_12623986 and since 229644091 and 12623986 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229644091.

It is not a weakly prime, because it can be changed into another prime (229644097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114822045 + 114822046.

It is an arithmetic number, because the mean of its divisors is an integer number (114822046).

Almost surely, 2^229644091 is an apocalyptic number.

229644091 is a deficient number, since it is larger than the sum of its proper divisors (1).

229644091 is an equidigital number, since it uses as much as digits as its factorization.

229644091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 229644091 is about 15154.0123729658. The cubic root of 229644091 is about 612.3763713275.

The spelling of 229644091 in words is "two hundred twenty-nine million, six hundred forty-four thousand, ninety-one".