91304401 has 4 divisors (see below), whose sum is σ = 91350000. Its totient is φ = 91258804.

The previous prime is 91304387. The next prime is 91304429. The reversal of 91304401 is 10440319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91304401 - 2¹⁵ = 91271633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91304461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19651 + ... + 23848.

It is an arithmetic number, because the mean of its divisors is an integer number (22837500).

Almost surely, 2^91304401 is an apocalyptic number.

It is an amenable number.

91304401 is a deficient number, since it is larger than the sum of its proper divisors (45599).

91304401 is a wasteful number, since it uses less digits than its factorization.

91304401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45598.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 91304401 is about 9555.3336414800. Note that the first 3 decimals coincide. The cubic root of 91304401 is about 450.2951167038.

It can be divided in two parts, 9130 and 4401, that multiplied together give a triangular number (40181130 = T₈₉₆₄).

The spelling of 91304401 in words is "ninety-one million, three hundred four thousand, four hundred one".