26993109 has 16 divisors (see below), whose sum is σ = 42283584. Its totient is φ = 15100800.

The previous prime is 26993089. The next prime is 26993111. The reversal of 26993109 is 90139962.

It is a happy number.

It is not a de Polignac number, because 26993109 - 2¹³ = 26984917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26993119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31032 + ... + 31889.

It is an arithmetic number, because the mean of its divisors is an integer number (2642724).

Almost surely, 2^26993109 is an apocalyptic number.

It is an amenable number.

26993109 is a deficient number, since it is larger than the sum of its proper divisors (15290475).

26993109 is a wasteful number, since it uses less digits than its factorization.

26993109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62948.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 26993109 is about 5195.4892936084. The cubic root of 26993109 is about 299.9744756062.

The spelling of 26993109 in words is "twenty-six million, nine hundred ninety-three thousand, one hundred nine".