91601914 has 8 divisors (see below), whose sum is σ = 139995540. Its totient is φ = 44936736.

The previous prime is 91601897. The next prime is 91601921. The reversal of 91601914 is 41910619.

It can be written as a sum of positive squares in 2 ways, for example, as 87740689 + 3861225 = 9367^2 + 1965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431979 + ... + 432190.

Almost surely, 2^91601914 is an apocalyptic number.

91601914 is a deficient number, since it is larger than the sum of its proper divisors (48393626).

91601914 is a wasteful number, since it uses less digits than its factorization.

91601914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864224.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 91601914 is about 9570.8888824393. Note that the first 5 decimals coincide. The cubic root of 91601914 is about 450.7836780485.

The spelling of 91601914 in words is "ninety-one million, six hundred one thousand, nine hundred fourteen".