91065394 has 16 divisors (see below), whose sum is σ = 161496000. Its totient is φ = 37682064.

The previous prime is 91065391. The next prime is 91065397. The reversal of 91065394 is 49356019.

It is an interprime number because it is at equal distance from previous prime (91065391) and next prime (91065397).

It is not an unprimeable number, because it can be changed into a prime (91065391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 111744 + ... + 112555.

It is an arithmetic number, because the mean of its divisors is an integer number (10093500).

Almost surely, 2^91065394 is an apocalyptic number.

91065394 is a deficient number, since it is larger than the sum of its proper divisors (70430606).

91065394 is a wasteful number, since it uses less digits than its factorization.

91065394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224337.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 91065394 is about 9542.8189755439. The cubic root of 91065394 is about 449.9018617266.

The spelling of 91065394 in words is "ninety-one million, sixty-five thousand, three hundred ninety-four".