890004871 has 4 divisors (see below), whose sum is σ = 1017148432. Its totient is φ = 762861312.

The previous prime is 890004853. The next prime is 890004877. The reversal of 890004871 is 178400098.

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 890004871 - 2⁷ = 890004743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 890004871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890004877) 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, 63571770 + ... + 63571783.

It is an arithmetic number, because the mean of its divisors is an integer number (254287108).

Almost surely, 2^890004871 is an apocalyptic number.

890004871 is a deficient number, since it is larger than the sum of its proper divisors (127143561).

890004871 is a wasteful number, since it uses less digits than its factorization.

890004871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127143560.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 890004871 is about 29832.9494183864. The cubic root of 890004871 is about 961.9019264419.

The spelling of 890004871 in words is "eight hundred ninety million, four thousand, eight hundred seventy-one".