857872995 has 32 divisors (see below), whose sum is σ = 1570040832. Its totient is φ = 391830912.

The previous prime is 857872987. The next prime is 857873059. The reversal of 857872995 is 599278758.

It is not a de Polignac number, because 857872995 - 2³ = 857872987 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 149754 + ... + 155376.

It is an arithmetic number, because the mean of its divisors is an integer number (49063776).

Almost surely, 2^857872995 is an apocalyptic number.

857872995 is a deficient number, since it is larger than the sum of its proper divisors (712167837).

857872995 is a wasteful number, since it uses less digits than its factorization.

857872995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091.

The product of its digits is 12700800, while the sum is 60.

The square root of 857872995 is about 29289.4690119162. The cubic root of 857872995 is about 950.1838960713.

The spelling of 857872995 in words is "eight hundred fifty-seven million, eight hundred seventy-two thousand, nine hundred ninety-five".