91190104 has 32 divisors (see below), whose sum is σ = 174960000. Its totient is φ = 44541952.

The previous prime is 91190081. The next prime is 91190107. The reversal of 91190104 is 40109119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91190107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190137 + ... + 190615.

It is an arithmetic number, because the mean of its divisors is an integer number (5467500).

Almost surely, 2^91190104 is an apocalyptic number.

It is an amenable number.

91190104 is a deficient number, since it is larger than the sum of its proper divisors (83769896).

91190104 is a wasteful number, since it uses less digits than its factorization.

91190104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 91190104 is about 9549.3509727101. The cubic root of 91190104 is about 450.1071415666.

The spelling of 91190104 in words is "ninety-one million, one hundred ninety thousand, one hundred four".