23400401 has 4 divisors (see below), whose sum is σ = 23841972. Its totient is φ = 22958832.

The previous prime is 23400397. The next prime is 23400413. The reversal of 23400401 is 10400432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11566801 + 11833600 = 3401^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 23400401 - 2² = 23400397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23400451) 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, 220706 + ... + 220811.

It is an arithmetic number, because the mean of its divisors is an integer number (5960493).

Almost surely, 2^23400401 is an apocalyptic number.

It is an amenable number.

23400401 is a deficient number, since it is larger than the sum of its proper divisors (441571).

23400401 is an equidigital number, since it uses as much as digits as its factorization.

23400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441570.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23400401 is about 4837.3960970754. The cubic root of 23400401 is about 286.0274844404.

Adding to 23400401 its reverse (10400432), we get a palindrome (33800833).

The spelling of 23400401 in words is "twenty-three million, four hundred thousand, four hundred one".