866952291 has 8 divisors (see below), whose sum is σ = 1187178064. Its totient is φ = 562347360.

The previous prime is 866952287. The next prime is 866952371. The reversal of 866952291 is 192259668.

866952291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866952291 - 2² = 866952287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866952291.

It is not an unprimeable number, because it can be changed into a prime (866952091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3905080 + ... + 3905301.

It is an arithmetic number, because the mean of its divisors is an integer number (148397258).

Almost surely, 2^866952291 is an apocalyptic number.

866952291 is a deficient number, since it is larger than the sum of its proper divisors (320225773).

866952291 is a wasteful number, since it uses less digits than its factorization.

866952291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810421.

The product of its digits is 466560, while the sum is 48.

The square root of 866952291 is about 29444.0535762317. The cubic root of 866952291 is about 953.5242288788.

The spelling of 866952291 in words is "eight hundred sixty-six million, nine hundred fifty-two thousand, two hundred ninety-one".