91944194 has 12 divisors (see below), whose sum is σ = 146507154. Its totient is φ = 43267584.

The previous prime is 91944161. The next prime is 91944197. The reversal of 91944194 is 49144919.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 90535225 + 1408969 = 9515^2 + 1187^2 .

It is not an unprimeable number, because it can be changed into a prime (91944197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78959 + ... + 80114.

Almost surely, 2^91944194 is an apocalyptic number.

91944194 is a deficient number, since it is larger than the sum of its proper divisors (54562960).

91944194 is a wasteful number, since it uses less digits than its factorization.

91944194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159109 (or 159092 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 91944194 is about 9588.7535164900. The cubic root of 91944194 is about 451.3444467405.

The spelling of 91944194 in words is "ninety-one million, nine hundred forty-four thousand, one hundred ninety-four".