91392401 has 4 divisors (see below), whose sum is σ = 91505904. Its totient is φ = 91278900.

The previous prime is 91392373. The next prime is 91392419. The reversal of 91392401 is 10429319.

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: 10429319 = 1723 ⋅6053.

It is a cyclic number.

It is not a de Polignac number, because 91392401 - 2¹⁴ = 91376017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91392421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55535 + ... + 57156.

It is an arithmetic number, because the mean of its divisors is an integer number (22876476).

Almost surely, 2^91392401 is an apocalyptic number.

It is an amenable number.

91392401 is a deficient number, since it is larger than the sum of its proper divisors (113503).

91392401 is a wasteful number, since it uses less digits than its factorization.

91392401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113502.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 91392401 is about 9559.9372905893. The cubic root of 91392401 is about 450.4397364083.

The spelling of 91392401 in words is "ninety-one million, three hundred ninety-two thousand, four hundred one".