899340121 has 3 divisors (see below), whose sum is σ = 899370111. Its totient is φ = 899310132.

The previous prime is 899340097. The next prime is 899340131. The reversal of 899340121 is 121043998.

The square root of 899340121 is 29989.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 773451721 + 125888400 = 27811^2 + 11220^2 .

It is not a de Polignac number, because 899340121 - 2¹¹ = 899338073 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899340131) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14995 + ... + 44983.

It is an arithmetic number, because the mean of its divisors is an integer number (299790037).

Almost surely, 2^899340121 is an apocalyptic number.

899340121 is the 29989-th square number.

899340121 is the 14995-th centered octagonal number.

It is an amenable number.

899340121 is a deficient number, since it is larger than the sum of its proper divisors (29990).

899340121 is an frugal number, since it uses more digits than its factorization.

899340121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59978 (or 29989 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The cubic root of 899340121 is about 965.2533616643.

The spelling of 899340121 in words is "eight hundred ninety-nine million, three hundred forty thousand, one hundred twenty-one".