91947194 has 16 divisors (see below), whose sum is σ = 146059200. Its totient is φ = 43290144.

The previous prime is 91947187. The next prime is 91947199. The reversal of 91947194 is 49174919.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91947199) 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, 899 + ... + 13590.

It is an arithmetic number, because the mean of its divisors is an integer number (9128700).

Almost surely, 2^91947194 is an apocalyptic number.

91947194 is a deficient number, since it is larger than the sum of its proper divisors (54112006).

91947194 is a wasteful number, since it uses less digits than its factorization.

91947194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14677.

The product of its digits is 81648, while the sum is 44.

The square root of 91947194 is about 9588.9099484769. The cubic root of 91947194 is about 451.3493555827.

The spelling of 91947194 in words is "ninety-one million, nine hundred forty-seven thousand, one hundred ninety-four".