91199402 has 16 divisors (see below), whose sum is σ = 156491520. Its totient is φ = 39048048.

The previous prime is 91199389. The next prime is 91199419. The reversal of 91199402 is 20499119.

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 7 ways as a sum of consecutive naturals, for example, 16124 + ... + 21032.

It is an arithmetic number, because the mean of its divisors is an integer number (9780720).

Almost surely, 2^91199402 is an apocalyptic number.

91199402 is a deficient number, since it is larger than the sum of its proper divisors (65292118).

91199402 is a wasteful number, since it uses less digits than its factorization.

91199402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 91199402 is about 9549.8377996697. The cubic root of 91199402 is about 450.1224391109.

The spelling of 91199402 in words is "ninety-one million, one hundred ninety-nine thousand, four hundred two".