899395919 has 2 divisors, whose sum is σ = 899395920. Its totient is φ = 899395918.

The previous prime is 899395909. The next prime is 899395969. The reversal of 899395919 is 919593998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 899395919 - 2⁸ = 899395663 is a prime.

It is a super-2 number, since 2×899395919² = 1617826038227709122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899395909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449697959 + 449697960.

It is an arithmetic number, because the mean of its divisors is an integer number (449697960).

Almost surely, 2^899395919 is an apocalyptic number.

899395919 is a deficient number, since it is larger than the sum of its proper divisors (1).

899395919 is an equidigital number, since it uses as much as digits as its factorization.

899395919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 62.

The square root of 899395919 is about 29989.9302933501. The cubic root of 899395919 is about 965.2733237424.

The spelling of 899395919 in words is "eight hundred ninety-nine million, three hundred ninety-five thousand, nine hundred nineteen".