91466899 has 4 divisors (see below), whose sum is σ = 94620960. Its totient is φ = 88312840.

The previous prime is 91466887. The next prime is 91466909. The reversal of 91466899 is 99866419.

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 91466899 - 2⁵ = 91466867 is a prime.

It is a super-2 number, since 2×91466899² = 16732387225352402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91466819) 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, 1576987 + ... + 1577044.

It is an arithmetic number, because the mean of its divisors is an integer number (23655240).

Almost surely, 2^91466899 is an apocalyptic number.

91466899 is a deficient number, since it is larger than the sum of its proper divisors (3154061).

91466899 is a wasteful number, since it uses less digits than its factorization.

91466899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154060.

The product of its digits is 839808, while the sum is 52.

The square root of 91466899 is about 9563.8328613585. The cubic root of 91466899 is about 450.5620943044.

It can be divided in two parts, 9 and 1466899, that multiplied together give a triangular number (13202091 = T₅₁₃₈).

The spelling of 91466899 in words is "ninety-one million, four hundred sixty-six thousand, eight hundred ninety-nine".