26400001 has 4 divisors (see below), whose sum is σ = 26771904. Its totient is φ = 26028100.

The previous prime is 26399959. The next prime is 26400013. The reversal of 26400001 is 10000462.

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 26400001 - 2¹¹ = 26397953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26400061) 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, 185845 + ... + 185986.

It is an arithmetic number, because the mean of its divisors is an integer number (6692976).

Almost surely, 2^26400001 is an apocalyptic number.

It is an amenable number.

26400001 is a deficient number, since it is larger than the sum of its proper divisors (371903).

26400001 is an equidigital number, since it uses as much as digits as its factorization.

26400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371902.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 26400001 is about 5138.0931287784. The cubic root of 26400001 is about 297.7611143504.

Adding to 26400001 its reverse (10000462), we get a palindrome (36400463).

The spelling of 26400001 in words is "twenty-six million, four hundred thousand, one".