872855417 has 8 divisors (see below), whose sum is σ = 997756800. Its totient is φ = 748005984.

The previous prime is 872855371. The next prime is 872855441. The reversal of 872855417 is 714558278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872855417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872855447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34709 + ... + 54317.

It is an arithmetic number, because the mean of its divisors is an integer number (124719600).

Almost surely, 2^872855417 is an apocalyptic number.

It is an amenable number.

872855417 is a deficient number, since it is larger than the sum of its proper divisors (124901383).

872855417 is a wasteful number, since it uses less digits than its factorization.

872855417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25975.

The product of its digits is 627200, while the sum is 47.

The square root of 872855417 is about 29544.1266075002. The cubic root of 872855417 is about 955.6835350255.

The spelling of 872855417 in words is "eight hundred seventy-two million, eight hundred fifty-five thousand, four hundred seventeen".