91419473 has 4 divisors (see below), whose sum is σ = 91543920. Its totient is φ = 91295028.

The previous prime is 91419451. The next prime is 91419487. The reversal of 91419473 is 37491419.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91419473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91419413) 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, 61115 + ... + 62592.

It is an arithmetic number, because the mean of its divisors is an integer number (22885980).

Almost surely, 2^91419473 is an apocalyptic number.

It is an amenable number.

91419473 is a deficient number, since it is larger than the sum of its proper divisors (124447).

91419473 is a wasteful number, since it uses less digits than its factorization.

91419473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124446.

The product of its digits is 27216, while the sum is 38.

The square root of 91419473 is about 9561.3530946200. The cubic root of 91419473 is about 450.4842080148.

The spelling of 91419473 in words is "ninety-one million, four hundred nineteen thousand, four hundred seventy-three".