899323971 has 32 divisors (see below), whose sum is σ = 1511827968. Its totient is φ = 462792960.

The previous prime is 899323963. The next prime is 899323993. The reversal of 899323971 is 179323998.

It is a happy number.

It is not a de Polignac number, because 899323971 - 2³ = 899323963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (899323951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28981 + ... + 51366.

It is an arithmetic number, because the mean of its divisors is an integer number (47244624).

Almost surely, 2^899323971 is an apocalyptic number.

899323971 is a deficient number, since it is larger than the sum of its proper divisors (612503997).

899323971 is a wasteful number, since it uses less digits than its factorization.

899323971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80411.

The product of its digits is 734832, while the sum is 51.

The square root of 899323971 is about 29988.7307333938. The cubic root of 899323971 is about 965.2475837483.

The spelling of 899323971 in words is "eight hundred ninety-nine million, three hundred twenty-three thousand, nine hundred seventy-one".