869247293 has 2 divisors, whose sum is σ = 869247294. Its totient is φ = 869247292.

The previous prime is 869247263. The next prime is 869247307. The reversal of 869247293 is 392742968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869247289 + 4 = 29483^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 869247293 - 2⁶ = 869247229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869247233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434623646 + 434623647.

It is an arithmetic number, because the mean of its divisors is an integer number (434623647).

Almost surely, 2^869247293 is an apocalyptic number.

It is an amenable number.

869247293 is a deficient number, since it is larger than the sum of its proper divisors (1).

869247293 is an equidigital number, since it uses as much as digits as its factorization.

869247293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 869247293 is about 29483.0000678357. Note that the first 4 decimals coincide. The cubic root of 869247293 is about 954.3648794634.

The spelling of 869247293 in words is "eight hundred sixty-nine million, two hundred forty-seven thousand, two hundred ninety-three".