91159454 has 16 divisors (see below), whose sum is σ = 144171600. Its totient is φ = 43110144.

The previous prime is 91159451. The next prime is 91159459. The reversal of 91159454 is 45495119.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91159451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27182 + ... + 30350.

It is an arithmetic number, because the mean of its divisors is an integer number (9010725).

Almost surely, 2^91159454 is an apocalyptic number.

91159454 is a deficient number, since it is larger than the sum of its proper divisors (53012146).

91159454 is a wasteful number, since it uses less digits than its factorization.

91159454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947.

The product of its digits is 32400, while the sum is 38.

The square root of 91159454 is about 9547.7460167309. The cubic root of 91159454 is about 450.0567072570.

The spelling of 91159454 in words is "ninety-one million, one hundred fifty-nine thousand, four hundred fifty-four".