158804399 has 12 divisors (see below), whose sum is σ = 175627296. Its totient is φ = 143462592.

The previous prime is 158804383. The next prime is 158804431. The reversal of 158804399 is 993408851.

It is not a de Polignac number, because 158804399 - 2⁴ = 158804383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158804309) 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 11 ways as a sum of consecutive naturals, for example, 2054 + ... + 17939.

It is an arithmetic number, because the mean of its divisors is an integer number (14635608).

Almost surely, 2^158804399 is an apocalyptic number.

158804399 is a deficient number, since it is larger than the sum of its proper divisors (16822897).

158804399 is a wasteful number, since it uses less digits than its factorization.

158804399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20066 (or 20053 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 158804399 is about 12601.7617419153. The cubic root of 158804399 is about 541.5279075681.

The spelling of 158804399 in words is "one hundred fifty-eight million, eight hundred four thousand, three hundred ninety-nine".