899611481 has 2 divisors, whose sum is σ = 899611482. Its totient is φ = 899611480.

The previous prime is 899611477. The next prime is 899611483. The reversal of 899611481 is 184116998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621255625 + 278355856 = 24925^2 + 16684^2 .

It is a cyclic number.

It is not a de Polignac number, because 899611481 - 2² = 899611477 is a prime.

It is a super-2 number, since 2×899611481² = 1618601633494026722, which contains 22 as substring.

Together with 899611483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (899611483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449805740 + 449805741.

It is an arithmetic number, because the mean of its divisors is an integer number (449805741).

Almost surely, 2^899611481 is an apocalyptic number.

It is an amenable number.

899611481 is a deficient number, since it is larger than the sum of its proper divisors (1).

899611481 is an equidigital number, since it uses as much as digits as its factorization.

899611481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The square root of 899611481 is about 29993.5239843537. The cubic root of 899611481 is about 965.3504346204.

The spelling of 899611481 in words is "eight hundred ninety-nine million, six hundred eleven thousand, four hundred eighty-one".