158400229 has 4 divisors (see below), whose sum is σ = 170584876. Its totient is φ = 146215584.

The previous prime is 158400227. The next prime is 158400239. The reversal of 158400229 is 922004851.

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 92352100 + 66048129 = 9610^2 + 8127^2 .

It is a cyclic number.

It is not a de Polignac number, because 158400229 - 2¹ = 158400227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158400229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158400227) 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, 6092304 + ... + 6092329.

It is an arithmetic number, because the mean of its divisors is an integer number (42646219).

Almost surely, 2^158400229 is an apocalyptic number.

It is an amenable number.

158400229 is a deficient number, since it is larger than the sum of its proper divisors (12184647).

158400229 is a wasteful number, since it uses less digits than its factorization.

158400229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184646.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 158400229 is about 12585.7152756607. The cubic root of 158400229 is about 541.0681065408.

The spelling of 158400229 in words is "one hundred fifty-eight million, four hundred thousand, two hundred twenty-nine".