69899899 has 2 divisors, whose sum is σ = 69899900. Its totient is φ = 69899898.

The previous prime is 69899833. The next prime is 69899927. The reversal of 69899899 is 99899896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69899899 - 2¹⁷ = 69768827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69899099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34949949 + 34949950.

It is an arithmetic number, because the mean of its divisors is an integer number (34949950).

Almost surely, 2^69899899 is an apocalyptic number.

69899899 is a deficient number, since it is larger than the sum of its proper divisors (1).

69899899 is an equidigital number, since it uses as much as digits as its factorization.

69899899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 67.

The square root of 69899899 is about 8360.6159462087. The cubic root of 69899899 is about 411.9319863692.

The spelling of 69899899 in words is "sixty-nine million, eight hundred ninety-nine thousand, eight hundred ninety-nine".