870458831 has 4 divisors (see below), whose sum is σ = 949591464. Its totient is φ = 791326200.

The previous prime is 870458783. The next prime is 870458839. The reversal of 870458831 is 138854078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 870458831 - 2¹⁰ = 870457807 is a prime.

It is a super-2 number, since 2×870458831² = 1515397152931773122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870458839) 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, 39566300 + ... + 39566321.

It is an arithmetic number, because the mean of its divisors is an integer number (237397866).

Almost surely, 2^870458831 is an apocalyptic number.

870458831 is a deficient number, since it is larger than the sum of its proper divisors (79132633).

870458831 is a wasteful number, since it uses less digits than its factorization.

870458831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79132632.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 870458831 is about 29503.5392961590. The cubic root of 870458831 is about 954.8080646411.

The spelling of 870458831 in words is "eight hundred seventy million, four hundred fifty-eight thousand, eight hundred thirty-one".