91058040 has 64 divisors (see below), whose sum is σ = 303530400. Its totient is φ = 24281856.

The previous prime is 91058039. The next prime is 91058113. The reversal of 91058040 is 4085019.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 91057995 and 91058013.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41077 + ... + 43236.

Almost surely, 2^91058040 is an apocalyptic number.

91058040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91058040 is an abundant number, since it is smaller than the sum of its proper divisors (212472360).

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

91058040 is a wasteful number, since it uses less digits than its factorization.

91058040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84333 (or 84323 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 91058040 is about 9542.4336518521. The cubic root of 91058040 is about 449.8897507691.

The spelling of 91058040 in words is "ninety-one million, fifty-eight thousand, forty".