91921346 has 32 divisors (see below), whose sum is σ = 160823232. Its totient is φ = 38940160.

The previous prime is 91921343. The next prime is 91921367. The reversal of 91921346 is 64312919.

It is not an unprimeable number, because it can be changed into a prime (91921343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38870 + ... + 41166.

It is an arithmetic number, because the mean of its divisors is an integer number (5025726).

Almost surely, 2^91921346 is an apocalyptic number.

91921346 is a deficient number, since it is larger than the sum of its proper divisors (68901886).

91921346 is a wasteful number, since it uses less digits than its factorization.

91921346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434.

The product of its digits is 11664, while the sum is 35.

The square root of 91921346 is about 9587.5620467353. The cubic root of 91921346 is about 451.3070574946.

The spelling of 91921346 in words is "ninety-one million, nine hundred twenty-one thousand, three hundred forty-six".