26889839 has 4 divisors (see below), whose sum is σ = 27051024. Its totient is φ = 26728656.

The previous prime is 26889827. The next prime is 26889853. The reversal of 26889839 is 93898862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93898862 = 2 ⋅46949431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26889839 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 (26889859) 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, 80342 + ... + 80675.

It is an arithmetic number, because the mean of its divisors is an integer number (6762756).

Almost surely, 2^26889839 is an apocalyptic number.

26889839 is a deficient number, since it is larger than the sum of its proper divisors (161185).

26889839 is a wasteful number, since it uses less digits than its factorization.

26889839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161184.

The product of its digits is 1492992, while the sum is 53.

The square root of 26889839 is about 5185.5413410752. The cubic root of 26889839 is about 299.5914401450.

The spelling of 26889839 in words is "twenty-six million, eight hundred eighty-nine thousand, eight hundred thirty-nine".