899869441 has 2 divisors, whose sum is σ = 899869442. Its totient is φ = 899869440.

The previous prime is 899869433. The next prime is 899869513. The reversal of 899869441 is 144968998.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620010000 + 279859441 = 24900^2 + 16729^2 .

It is a cyclic number.

It is not a de Polignac number, because 899869441 - 2³ = 899869433 is a prime.

It is not a weakly prime, because it can be changed into another prime (899869141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449934720 + 449934721.

It is an arithmetic number, because the mean of its divisors is an integer number (449934721).

Almost surely, 2^899869441 is an apocalyptic number.

It is an amenable number.

899869441 is a deficient number, since it is larger than the sum of its proper divisors (1).

899869441 is an equidigital number, since it uses as much as digits as its factorization.

899869441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 58.

The square root of 899869441 is about 29997.8239377459. The cubic root of 899869441 is about 965.4426959299.

The spelling of 899869441 in words is "eight hundred ninety-nine million, eight hundred sixty-nine thousand, four hundred forty-one".