869763493 has 2 divisors, whose sum is σ = 869763494. Its totient is φ = 869763492.

The previous prime is 869763371. The next prime is 869763523. The reversal of 869763493 is 394367968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444661569 + 425101924 = 21087^2 + 20618^2 .

It is a cyclic number.

It is not a de Polignac number, because 869763493 - 2¹³ = 869755301 is a prime.

It is a super-2 number, since 2×869763493² = 1512977067511122098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869763593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434881746 + 434881747.

It is an arithmetic number, because the mean of its divisors is an integer number (434881747).

Almost surely, 2^869763493 is an apocalyptic number.

It is an amenable number.

869763493 is a deficient number, since it is larger than the sum of its proper divisors (1).

869763493 is an equidigital number, since it uses as much as digits as its factorization.

869763493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The square root of 869763493 is about 29491.7529658717. The cubic root of 869763493 is about 954.5537576913.

The spelling of 869763493 in words is "eight hundred sixty-nine million, seven hundred sixty-three thousand, four hundred ninety-three".