91613403 has 16 divisors (see below), whose sum is σ = 155112960. Its totient is φ = 52350408.

The previous prime is 91613351. The next prime is 91613411. The reversal of 91613403 is 30431619.

91613403 is a `hidden beast` number, since 9 + 1 + 613 + 40 + 3 = 666.

It is not a de Polignac number, because 91613403 - 2⁹ = 91612891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (91613413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242175 + ... + 242552.

It is an arithmetic number, because the mean of its divisors is an integer number (9694560).

Almost surely, 2^91613403 is an apocalyptic number.

91613403 is a deficient number, since it is larger than the sum of its proper divisors (63499557).

91613403 is a wasteful number, since it uses less digits than its factorization.

91613403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484743 (or 484737 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 91613403 is about 9571.4890691052. The cubic root of 91613403 is about 450.8025234960.

The spelling of 91613403 in words is "ninety-one million, six hundred thirteen thousand, four hundred three".