91243401 has 8 divisors (see below), whose sum is σ = 121956960. Its totient is φ = 60679392.

The previous prime is 91243393. The next prime is 91243417. The reversal of 91243401 is 10434219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91243401 - 2³ = 91243393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91243421) 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 7 ways as a sum of consecutive naturals, for example, 35955 + ... + 38408.

It is an arithmetic number, because the mean of its divisors is an integer number (15244620).

Almost surely, 2^91243401 is an apocalyptic number.

It is an amenable number.

91243401 is a deficient number, since it is larger than the sum of its proper divisors (30713559).

91243401 is a wasteful number, since it uses less digits than its factorization.

91243401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74775.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 91243401 is about 9552.1411735799. The cubic root of 91243401 is about 450.1948144140.

The spelling of 91243401 in words is "ninety-one million, two hundred forty-three thousand, four hundred one".