867981489 has 16 divisors (see below), whose sum is σ = 1175549760. Its totient is φ = 569592320.

The previous prime is 867981487. The next prime is 867981523. The reversal of 867981489 is 984189768.

It is a cyclic number.

It is not a de Polignac number, because 867981489 - 2¹ = 867981487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (867981481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53449 + ... + 67769.

It is an arithmetic number, because the mean of its divisors is an integer number (73471860).

Almost surely, 2^867981489 is an apocalyptic number.

867981489 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

867981489 is a deficient number, since it is larger than the sum of its proper divisors (307568271).

867981489 is a wasteful number, since it uses less digits than its factorization.

867981489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640.

The product of its digits is 6967296, while the sum is 60.

The square root of 867981489 is about 29461.5255714975. The cubic root of 867981489 is about 953.9014034763.

The spelling of 867981489 in words is "eight hundred sixty-seven million, nine hundred eighty-one thousand, four hundred eighty-nine".