91761416 has 8 divisors (see below), whose sum is σ = 172052670. Its totient is φ = 45880704.

The previous prime is 91761401. The next prime is 91761479. The reversal of 91761416 is 61416719.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 28622500 = 7946^2 + 5350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5735081 + ... + 5735096.

Almost surely, 2^91761416 is an apocalyptic number.

It is an amenable number.

91761416 is a deficient number, since it is larger than the sum of its proper divisors (80291254).

91761416 is a wasteful number, since it uses less digits than its factorization.

91761416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470183 (or 11470179 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 91761416 is about 9579.2179221479. The cubic root of 91761416 is about 451.0451689675.

The spelling of 91761416 in words is "ninety-one million, seven hundred sixty-one thousand, four hundred sixteen".