4891967 has 4 divisors (see below), whose sum is σ = 4900176. Its totient is φ = 4883760.

The previous prime is 4891961. The next prime is 4891969. The reversal of 4891967 is 7691984.

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

It is a cyclic number.

It is not a de Polignac number, because 4891967 - 2¹⁰ = 4890943 is a prime.

It is a super-2 number, since 2×4891967² = 47862682258178, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134 + ... + 4427.

It is an arithmetic number, because the mean of its divisors is an integer number (1225044).

Almost surely, 2^4891967 is an apocalyptic number.

4891967 is a deficient number, since it is larger than the sum of its proper divisors (8209).

4891967 is an equidigital number, since it uses as much as digits as its factorization.

4891967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208.

The product of its digits is 108864, while the sum is 44.

The square root of 4891967 is about 2211.7791481068. The cubic root of 4891967 is about 169.7570578279.

The spelling of 4891967 in words is "four million, eight hundred ninety-one thousand, nine hundred sixty-seven".