899689623 has 16 divisors (see below), whose sum is σ = 1451600640. Its totient is φ = 483866496.

The previous prime is 899689607. The next prime is 899689631. The reversal of 899689623 is 326986998.

It is not a de Polignac number, because 899689623 - 2⁴ = 899689607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899689663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259713 + ... + 1260426.

It is an arithmetic number, because the mean of its divisors is an integer number (90725040).

Almost surely, 2^899689623 is an apocalyptic number.

899689623 is a deficient number, since it is larger than the sum of its proper divisors (551911017).

899689623 is a wasteful number, since it uses less digits than its factorization.

899689623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520166.

The product of its digits is 10077696, while the sum is 60.

The square root of 899689623 is about 29994.8266039329. The cubic root of 899689623 is about 965.3783845489.

The spelling of 899689623 in words is "eight hundred ninety-nine million, six hundred eighty-nine thousand, six hundred twenty-three".