26920009 has 4 divisors (see below), whose sum is σ = 26939920. Its totient is φ = 26900100.

The previous prime is 26920007. The next prime is 26920031. The reversal of 26920009 is 90002962.

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 26920009 - 2¹ = 26920007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26920007) 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 3 ways as a sum of consecutive naturals, for example, 7767 + ... + 10684.

It is an arithmetic number, because the mean of its divisors is an integer number (6734980).

Almost surely, 2^26920009 is an apocalyptic number.

It is an amenable number.

26920009 is a deficient number, since it is larger than the sum of its proper divisors (19911).

26920009 is a wasteful number, since it uses less digits than its factorization.

26920009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19910.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 26920009 is about 5188.4495757403. The cubic root of 26920009 is about 299.7034439821.

The spelling of 26920009 in words is "twenty-six million, nine hundred twenty thousand, nine".