26990149 has 2 divisors, whose sum is σ = 26990150. Its totient is φ = 26990148.

The previous prime is 26990147. The next prime is 26990179. The reversal of 26990149 is 94109962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 4730625 = 4718^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 26990149 - 2¹ = 26990147 is a prime.

Together with 26990147, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26990143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13495074 + 13495075.

It is an arithmetic number, because the mean of its divisors is an integer number (13495075).

Almost surely, 2^26990149 is an apocalyptic number.

It is an amenable number.

26990149 is a deficient number, since it is larger than the sum of its proper divisors (1).

26990149 is an equidigital number, since it uses as much as digits as its factorization.

26990149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 26990149 is about 5195.2044233119. The cubic root of 26990149 is about 299.9635103767.

The spelling of 26990149 in words is "twenty-six million, nine hundred ninety thousand, one hundred forty-nine".