899616401 has 2 divisors, whose sum is σ = 899616402. Its totient is φ = 899616400.

The previous prime is 899616343. The next prime is 899616413. The reversal of 899616401 is 104616998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 679123600 + 220492801 = 26060^2 + 14849^2 .

It is a cyclic number.

It is not a de Polignac number, because 899616401 - 2¹⁰ = 899615377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (899616461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449808200 + 449808201.

It is an arithmetic number, because the mean of its divisors is an integer number (449808201).

Almost surely, 2^899616401 is an apocalyptic number.

It is an amenable number.

899616401 is a deficient number, since it is larger than the sum of its proper divisors (1).

899616401 is an equidigital number, since it uses as much as digits as its factorization.

899616401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 899616401 is about 29993.6060019465. The cubic root of 899616401 is about 965.3521944599.

The spelling of 899616401 in words is "eight hundred ninety-nine million, six hundred sixteen thousand, four hundred one".