91454719 has 8 divisors (see below), whose sum is σ = 95495760. Its totient is φ = 87472896.

The previous prime is 91454707. The next prime is 91454729. The reversal of 91454719 is 91745419.

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

It is a cyclic number.

It is not a de Polignac number, because 91454719 - 2⁵ = 91454687 is a prime.

It is a super-2 number, since 2×91454719² = 16727931254737922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91454729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11634 + ... + 17839.

It is an arithmetic number, because the mean of its divisors is an integer number (11936970).

Almost surely, 2^91454719 is an apocalyptic number.

91454719 is a deficient number, since it is larger than the sum of its proper divisors (4041041).

91454719 is a wasteful number, since it uses less digits than its factorization.

91454719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29609.

The product of its digits is 45360, while the sum is 40.

The square root of 91454719 is about 9563.1960661695. The cubic root of 91454719 is about 450.5420940275.

The spelling of 91454719 in words is "ninety-one million, four hundred fifty-four thousand, seven hundred nineteen".