91486840 has 16 divisors (see below), whose sum is σ = 205845480. Its totient is φ = 36594720.

The previous prime is 91486831. The next prime is 91486849. The reversal of 91486840 is 4868419.

It is an interprime number because it is at equal distance from previous prime (91486831) and next prime (91486849).

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2287171 = 91486840 / (9 + 1 + 4 + 8 + 6 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 91486793 and 91486802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91486849) 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 3 ways as a sum of consecutive naturals, for example, 1143546 + ... + 1143625.

Almost surely, 2^91486840 is an apocalyptic number.

It is an amenable number.

91486840 is an abundant number, since it is smaller than the sum of its proper divisors (114358640).

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

91486840 is a wasteful number, since it uses less digits than its factorization.

91486840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287182 (or 2287178 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 91486840 is about 9564.8753258994. The cubic root of 91486840 is about 450.5948347674.

The spelling of 91486840 in words is "ninety-one million, four hundred eighty-six thousand, eight hundred forty".