229429157 has 4 divisors (see below), whose sum is σ = 230969100. Its totient is φ = 227889216.

The previous prime is 229429141. The next prime is 229429159. The reversal of 229429157 is 751924922.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101082916 + 128346241 = 10054^2 + 11329^2 .

It is a cyclic number.

It is not a de Polignac number, because 229429157 - 2⁴ = 229429141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229429159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769748 + ... + 770045.

It is an arithmetic number, because the mean of its divisors is an integer number (57742275).

Almost surely, 2^229429157 is an apocalyptic number.

It is an amenable number.

229429157 is a deficient number, since it is larger than the sum of its proper divisors (1539943).

229429157 is a wasteful number, since it uses less digits than its factorization.

229429157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539942.

The product of its digits is 90720, while the sum is 41.

The square root of 229429157 is about 15146.9190596636. The cubic root of 229429157 is about 612.1852617037.

The spelling of 229429157 in words is "two hundred twenty-nine million, four hundred twenty-nine thousand, one hundred fifty-seven".