869424197 has 2 divisors, whose sum is σ = 869424198. Its totient is φ = 869424196.

The previous prime is 869424191. The next prime is 869424239. The reversal of 869424197 is 791424968.

869424197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 29486²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869424196 + 1 = 29486^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869424197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869424191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434712098 + 434712099.

It is an arithmetic number, because the mean of its divisors is an integer number (434712099).

Almost surely, 2^869424197 is an apocalyptic number.

It is an amenable number.

869424197 is a deficient number, since it is larger than the sum of its proper divisors (1).

869424197 is an equidigital number, since it uses as much as digits as its factorization.

869424197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 869424197 is about 29486.0000169572. Note that the first 4 decimals coincide. The cubic root of 869424197 is about 954.4296172790.

The spelling of 869424197 in words is "eight hundred sixty-nine million, four hundred twenty-four thousand, one hundred ninety-seven".