849399157 has 4 divisors (see below), whose sum is σ = 852130656. Its totient is φ = 846667660.

The previous prime is 849399149. The next prime is 849399209. The reversal of 849399157 is 751993948.

849399157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 849399157 - 2³ = 849399149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849399098 and 849399107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849399127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365283 + ... + 1365904.

It is an arithmetic number, because the mean of its divisors is an integer number (213032664).

Almost surely, 2^849399157 is an apocalyptic number.

It is an amenable number.

849399157 is a deficient number, since it is larger than the sum of its proper divisors (2731499).

849399157 is a wasteful number, since it uses less digits than its factorization.

849399157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731498.

The product of its digits is 2449440, while the sum is 55.

The square root of 849399157 is about 29144.4532801698. The cubic root of 849399157 is about 947.0449847741.

It can be divided in two parts, 849399 and 157, that added together give a triangular number (849556 = T₁₃₀₃).

The spelling of 849399157 in words is "eight hundred forty-nine million, three hundred ninety-nine thousand, one hundred fifty-seven".