867881279 has 8 divisors (see below), whose sum is σ = 871355808. Its totient is φ = 864414720.

The previous prime is 867881257. The next prime is 867881291. The reversal of 867881279 is 972188768.

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

It is a cyclic number.

It is not a de Polignac number, because 867881279 - 2¹⁶ = 867815743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867881219) 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 in 7 ways as a sum of consecutive naturals, for example, 299174 + ... + 302060.

It is an arithmetic number, because the mean of its divisors is an integer number (108919476).

Almost surely, 2^867881279 is an apocalyptic number.

867881279 is a deficient number, since it is larger than the sum of its proper divisors (3474529).

867881279 is a wasteful number, since it uses less digits than its factorization.

867881279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985.

The product of its digits is 2709504, while the sum is 56.

The square root of 867881279 is about 29459.8248297576. The cubic root of 867881279 is about 953.8646921947.

The spelling of 867881279 in words is "eight hundred sixty-seven million, eight hundred eighty-one thousand, two hundred seventy-nine".