866474269 has 2 divisors, whose sum is σ = 866474270. Its totient is φ = 866474268.

The previous prime is 866474261. The next prime is 866474293. The reversal of 866474269 is 962474668.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862127044 + 4347225 = 29362^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 866474269 - 2³ = 866474261 is a prime.

It is a super-2 number, since 2×866474269² = 1501555317678168722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866474261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433237134 + 433237135.

It is an arithmetic number, because the mean of its divisors is an integer number (433237135).

Almost surely, 2^866474269 is an apocalyptic number.

It is an amenable number.

866474269 is a deficient number, since it is larger than the sum of its proper divisors (1).

866474269 is an equidigital number, since it uses as much as digits as its factorization.

866474269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 52.

The square root of 866474269 is about 29435.9349944927. The cubic root of 866474269 is about 953.3489445855.

The spelling of 866474269 in words is "eight hundred sixty-six million, four hundred seventy-four thousand, two hundred sixty-nine".