91223990454 has 8 divisors (see below), whose sum is σ = 182447980920. Its totient is φ = 30407996816.

The previous prime is 91223990453. The next prime is 91223990489. The reversal of 91223990454 is 45409932219.

It is a sphenic number, since it is the product of 3 distinct primes.

91223990454 is an admirable number.

It is a super-2 number, since 2×91223990454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91223990453) 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, 7601999199 + ... + 7601999210.

It is an arithmetic number, because the mean of its divisors is an integer number (22805997615).

Almost surely, 2^91223990454 is an apocalyptic number.

91223990454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91223990454 is a wasteful number, since it uses less digits than its factorization.

91223990454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15203998414.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 91223990454 in words is "ninety-one billion, two hundred twenty-three million, nine hundred ninety thousand, four hundred fifty-four".