9881967 has 4 divisors (see below), whose sum is σ = 13175960. Its totient is φ = 6587976.

The previous prime is 9881951. The next prime is 9881983. The reversal of 9881967 is 7691889.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9881951) and next prime (9881983).

It is not a de Polignac number, because 9881967 - 2⁴ = 9881951 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 (9881987) 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, 1646992 + ... + 1646997.

It is an arithmetic number, because the mean of its divisors is an integer number (3293990).

Almost surely, 2^9881967 is an apocalyptic number.

9881967 is a deficient number, since it is larger than the sum of its proper divisors (3293993).

9881967 is a wasteful number, since it uses less digits than its factorization.

9881967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293992.

The product of its digits is 217728, while the sum is 48.

The square root of 9881967 is about 3143.5596065607. The cubic root of 9881967 is about 214.5924639803.

The spelling of 9881967 in words is "nine million, eight hundred eighty-one thousand, nine hundred sixty-seven".