899023591069 has 2 divisors, whose sum is σ = 899023591070. Its totient is φ = 899023591068.

The previous prime is 899023591061. The next prime is 899023591097. The reversal of 899023591069 is 960195320998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830172455044 + 68851136025 = 911138^2 + 262395^2 .

It is a cyclic number.

It is not a de Polignac number, because 899023591069 - 2³ = 899023591061 is a prime.

It is a super-2 number, since 2×899023591069² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 899023590998 and 899023591016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899023591061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449511795534 + 449511795535.

It is an arithmetic number, because the mean of its divisors is an integer number (449511795535).

Almost surely, 2^899023591069 is an apocalyptic number.

It is an amenable number.

899023591069 is a deficient number, since it is larger than the sum of its proper divisors (1).

899023591069 is an equidigital number, since it uses as much as digits as its factorization.

899023591069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9447840, while the sum is 61.

The spelling of 899023591069 in words is "eight hundred ninety-nine billion, twenty-three million, five hundred ninety-one thousand, sixty-nine".