91451292 has 12 divisors (see below), whose sum is σ = 213386376. Its totient is φ = 30483760.

The previous prime is 91451291. The next prime is 91451293. The reversal of 91451292 is 29215419.

It is an interprime number because it is at equal distance from previous prime (91451291) and next prime (91451293).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91451291) 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, 3810459 + ... + 3810482.

It is an arithmetic number, because the mean of its divisors is an integer number (17782198).

Almost surely, 2^91451292 is an apocalyptic number.

It is an amenable number.

91451292 is an abundant number, since it is smaller than the sum of its proper divisors (121935084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91451292 is a wasteful number, since it uses less digits than its factorization.

91451292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620948 (or 7620946 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 91451292 is about 9563.0168879909. The cubic root of 91451292 is about 450.5364663717.

The spelling of 91451292 in words is "ninety-one million, four hundred fifty-one thousand, two hundred ninety-two".