91382401 has 4 divisors (see below), whose sum is σ = 99689904. Its totient is φ = 83074900.

The previous prime is 91382383. The next prime is 91382411. The reversal of 91382401 is 10428319.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10428319 = 11 ⋅948029.

It is a cyclic number.

It is not a de Polignac number, because 91382401 - 2⁷ = 91382273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91382401.

It is not an unprimeable number, because it can be changed into a prime (91382411) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4153735 + ... + 4153756.

It is an arithmetic number, because the mean of its divisors is an integer number (24922476).

Almost surely, 2^91382401 is an apocalyptic number.

It is an amenable number.

91382401 is a deficient number, since it is larger than the sum of its proper divisors (8307503).

91382401 is a wasteful number, since it uses less digits than its factorization.

91382401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307502.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 91382401 is about 9559.4142602986. The cubic root of 91382401 is about 450.4233070275.

The spelling of 91382401 in words is "ninety-one million, three hundred eighty-two thousand, four hundred one".