981939267 has 20 divisors (see below), whose sum is σ = 1468615720. Its totient is φ = 653837184.

The previous prime is 981939241. The next prime is 981939289. The reversal of 981939267 is 762939189.

It is not a de Polignac number, because 981939267 - 2⁸ = 981939011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981939467) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64659 + ... + 78387.

It is an arithmetic number, because the mean of its divisors is an integer number (73430786).

Almost surely, 2^981939267 is an apocalyptic number.

981939267 is a deficient number, since it is larger than the sum of its proper divisors (486676453).

981939267 is a wasteful number, since it uses less digits than its factorization.

981939267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14624 (or 14615 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 981939267 is about 31335.9101830472. The cubic root of 981939267 is about 993.9431442311.

The spelling of 981939267 in words is "nine hundred eighty-one million, nine hundred thirty-nine thousand, two hundred sixty-seven".