91420476 has 120 divisors (see below), whose sum is σ = 263518080. Its totient is φ = 24597216.

The previous prime is 91420471. The next prime is 91420481. The reversal of 91420476 is 67402419.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91420471) and next prime (91420481).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91420471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 547345 + ... + 547511.

It is an arithmetic number, because the mean of its divisors is an integer number (2195984).

Almost surely, 2^91420476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91420476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131759040).

91420476 is an abundant number, since it is smaller than the sum of its proper divisors (172097604).

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

91420476 is a wasteful number, since it uses less digits than its factorization.

91420476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 91420476 is about 9561.4055452114. The cubic root of 91420476 is about 450.4858554902.

The spelling of 91420476 in words is "ninety-one million, four hundred twenty thousand, four hundred seventy-six".