26973139 has 2 divisors, whose sum is σ = 26973140. Its totient is φ = 26973138.

The previous prime is 26973137. The next prime is 26973157. The reversal of 26973139 is 93137962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26973139 - 2¹ = 26973137 is a prime.

Together with 26973137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26973137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13486569 + 13486570.

It is an arithmetic number, because the mean of its divisors is an integer number (13486570).

Almost surely, 2^26973139 is an apocalyptic number.

26973139 is a deficient number, since it is larger than the sum of its proper divisors (1).

26973139 is an equidigital number, since it uses as much as digits as its factorization.

26973139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 26973139 is about 5193.5670786079. The cubic root of 26973139 is about 299.9004818056.

The spelling of 26973139 in words is "twenty-six million, nine hundred seventy-three thousand, one hundred thirty-nine".