91481469 has 8 divisors (see below), whose sum is σ = 123115680. Its totient is φ = 60417456.

The previous prime is 91481443. The next prime is 91481473. The reversal of 91481469 is 96418419.

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

It is not a de Polignac number, because 91481469 - 2⁸ = 91481213 is a prime.

It is a super-2 number, since 2×91481469² = 16737718340795922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91481469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91481069) 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, 142174 + ... + 142815.

It is an arithmetic number, because the mean of its divisors is an integer number (15389460).

Almost surely, 2^91481469 is an apocalyptic number.

It is an amenable number.

91481469 is a deficient number, since it is larger than the sum of its proper divisors (31634211).

91481469 is a wasteful number, since it uses less digits than its factorization.

91481469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285099.

The product of its digits is 62208, while the sum is 42.

The square root of 91481469 is about 9564.5945549197. The cubic root of 91481469 is about 450.5860167697.

The spelling of 91481469 in words is "ninety-one million, four hundred eighty-one thousand, four hundred sixty-nine".