26970409 has 4 divisors (see below), whose sum is σ = 27008640. Its totient is φ = 26932180.

The previous prime is 26970407. The next prime is 26970431. The reversal of 26970409 is 90407962.

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 26970409 - 2¹ = 26970407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26970401) 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, 18037 + ... + 19474.

It is an arithmetic number, because the mean of its divisors is an integer number (6752160).

Almost surely, 2^26970409 is an apocalyptic number.

It is an amenable number.

26970409 is a deficient number, since it is larger than the sum of its proper divisors (38231).

26970409 is an equidigital number, since it uses as much as digits as its factorization.

26970409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38230.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 26970409 is about 5193.3042468163. The cubic root of 26970409 is about 299.8903636415.

The spelling of 26970409 in words is "twenty-six million, nine hundred seventy thousand, four hundred nine".