91398795 has 16 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 48704864.

The previous prime is 91398793. The next prime is 91398809. The reversal of 91398795 is 59789319.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 91398795 - 2¹ = 91398793 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (91398793) 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 15 ways as a sum of consecutive naturals, for example, 26056 + ... + 29354.

It is an arithmetic number, because the mean of its divisors is an integer number (9147600).

Almost surely, 2^91398795 is an apocalyptic number.

91398795 is a deficient number, since it is larger than the sum of its proper divisors (54962805).

91398795 is a wasteful number, since it uses less digits than its factorization.

91398795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154.

The product of its digits is 612360, while the sum is 51.

The square root of 91398795 is about 9560.2717011600. The cubic root of 91398795 is about 450.4502407262.

The spelling of 91398795 in words is "ninety-one million, three hundred ninety-eight thousand, seven hundred ninety-five".