899775539 has 4 divisors (see below), whose sum is σ = 968989056. Its totient is φ = 830562024.

The previous prime is 899775517. The next prime is 899775553. The reversal of 899775539 is 935577998.

It is a happy number.

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 899775539 - 2²⁰ = 898726963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899775599) 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, 34606739 + ... + 34606764.

It is an arithmetic number, because the mean of its divisors is an integer number (242247264).

Almost surely, 2^899775539 is an apocalyptic number.

899775539 is a deficient number, since it is larger than the sum of its proper divisors (69213517).

899775539 is a wasteful number, since it uses less digits than its factorization.

899775539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69213516.

The product of its digits is 21432600, while the sum is 62.

The square root of 899775539 is about 29996.2587500508. The cubic root of 899775539 is about 965.4091132236.

The spelling of 899775539 in words is "eight hundred ninety-nine million, seven hundred seventy-five thousand, five hundred thirty-nine".