867908489 has 4 divisors (see below), whose sum is σ = 991895424. Its totient is φ = 743921556.

The previous prime is 867908477. The next prime is 867908501. The reversal of 867908489 is 984809768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (867908477) and next prime (867908501).

It is not a de Polignac number, because 867908489 - 2⁸ = 867908233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867908449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61993457 + ... + 61993470.

It is an arithmetic number, because the mean of its divisors is an integer number (247973856).

Almost surely, 2^867908489 is an apocalyptic number.

It is an amenable number.

867908489 is a deficient number, since it is larger than the sum of its proper divisors (123986935).

867908489 is a wasteful number, since it uses less digits than its factorization.

867908489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123986934.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 867908489 is about 29460.2866415111. The cubic root of 867908489 is about 953.8746606807.

The spelling of 867908489 in words is "eight hundred sixty-seven million, nine hundred eight thousand, four hundred eighty-nine".