849397158 has 32 divisors (see below), whose sum is σ = 1919548800. Its totient is φ = 278332488.

The previous prime is 849397151. The next prime is 849397187. The reversal of 849397158 is 851793948.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849397151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130116 + ... + 136487.

It is an arithmetic number, because the mean of its divisors is an integer number (59985900).

Almost surely, 2^849397158 is an apocalyptic number.

849397158 is an abundant number, since it is smaller than the sum of its proper divisors (1070151642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849397158 is a wasteful number, since it uses less digits than its factorization.

849397158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266673 (or 266667 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 849397158 is about 29144.4189854593. The cubic root of 849397158 is about 947.0442418393.

The spelling of 849397158 in words is "eight hundred forty-nine million, three hundred ninety-seven thousand, one hundred fifty-eight".