91044854 has 4 divisors (see below), whose sum is σ = 136567284. Its totient is φ = 45522426.

The previous prime is 91044853. The next prime is 91044973. The reversal of 91044854 is 45844019.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91044851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22761212 + ... + 22761215.

It is an arithmetic number, because the mean of its divisors is an integer number (34141821).

Almost surely, 2^91044854 is an apocalyptic number.

91044854 is a deficient number, since it is larger than the sum of its proper divisors (45522430).

91044854 is a wasteful number, since it uses less digits than its factorization.

91044854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45522429.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 91044854 is about 9541.7427129430. The cubic root of 91044854 is about 449.8680337316.

The spelling of 91044854 in words is "ninety-one million, forty-four thousand, eight hundred fifty-four".