91048386 has 64 divisors (see below), whose sum is σ = 215945856. Its totient is φ = 25439040.

The previous prime is 91048351. The next prime is 91048411. The reversal of 91048386 is 68384019.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103380 + ... + 104256.

It is an arithmetic number, because the mean of its divisors is an integer number (3374154).

Almost surely, 2^91048386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91048386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107972928).

91048386 is an abundant number, since it is smaller than the sum of its proper divisors (124897470).

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

91048386 is a wasteful number, since it uses less digits than its factorization.

91048386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 91048386 is about 9541.9277926423. The cubic root of 91048386 is about 449.8738510596.

The spelling of 91048386 in words is "ninety-one million, forty-eight thousand, three hundred eighty-six".