916860871 has 4 divisors (see below), whose sum is σ = 917148744. Its totient is φ = 916573000.

The previous prime is 916860863. The next prime is 916860907. The reversal of 916860871 is 178068619.

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 916860871 - 2³ = 916860863 is a prime.

It is a super-3 number, since 3×916860871³ (a number of 28 digits) contains 333 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 (916860271) 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, 139105 + ... + 145546.

It is an arithmetic number, because the mean of its divisors is an integer number (229287186).

Almost surely, 2^916860871 is an apocalyptic number.

916860871 is a deficient number, since it is larger than the sum of its proper divisors (287873).

916860871 is a wasteful number, since it uses less digits than its factorization.

916860871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287872.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 916860871 is about 30279.7105501357. The cubic root of 916860871 is about 971.4813766330.

The spelling of 916860871 in words is "nine hundred sixteen million, eight hundred sixty thousand, eight hundred seventy-one".