91869067 has 4 divisors (see below), whose sum is σ = 93823776. Its totient is φ = 89914360.

The previous prime is 91869059. The next prime is 91869083. The reversal of 91869067 is 76096819.

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 91869067 - 2³ = 91869059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91869007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977284 + ... + 977377.

It is an arithmetic number, because the mean of its divisors is an integer number (23455944).

Almost surely, 2^91869067 is an apocalyptic number.

91869067 is a deficient number, since it is larger than the sum of its proper divisors (1954709).

91869067 is a wasteful number, since it uses less digits than its factorization.

91869067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954708.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 91869067 is about 9584.8352620168. The cubic root of 91869067 is about 451.2214830443.

The spelling of 91869067 in words is "ninety-one million, eight hundred sixty-nine thousand, sixty-seven".