91419472 has 20 divisors (see below), whose sum is σ = 187544916. Its totient is φ = 43020800.

The previous prime is 91419451. The next prime is 91419487. The reversal of 91419472 is 27491419.

It can be written as a sum of positive squares in 2 ways, for example, as 79281216 + 12138256 = 8904^2 + 3484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167779 + ... + 168322.

Almost surely, 2^91419472 is an apocalyptic number.

It is an amenable number.

91419472 is an abundant number, since it is smaller than the sum of its proper divisors (96125444).

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

91419472 is a wasteful number, since it uses less digits than its factorization.

91419472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336126 (or 336120 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 91419472 is about 9561.3530423262. The cubic root of 91419472 is about 450.4842063722.

The spelling of 91419472 in words is "ninety-one million, four hundred nineteen thousand, four hundred seventy-two".