26939191 has 4 divisors (see below), whose sum is σ = 26985672. Its totient is φ = 26892712.

The previous prime is 26939183. The next prime is 26939197. The reversal of 26939191 is 19193962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19193962 = 2 ⋅9596981.

It is a cyclic number.

It is not a de Polignac number, because 26939191 - 2³ = 26939183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26939197) 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, 22360 + ... + 23533.

It is an arithmetic number, because the mean of its divisors is an integer number (6746418).

Almost surely, 2^26939191 is an apocalyptic number.

26939191 is a deficient number, since it is larger than the sum of its proper divisors (46481).

26939191 is an equidigital number, since it uses as much as digits as its factorization.

26939191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46480.

The product of its digits is 26244, while the sum is 40.

The square root of 26939191 is about 5190.2977756580. The cubic root of 26939191 is about 299.7746121917.

The spelling of 26939191 in words is "twenty-six million, nine hundred thirty-nine thousand, one hundred ninety-one".