26279397 has 10 divisors (see below), whose sum is σ = 39256998. Its totient is φ = 17519544.

The previous prime is 26279369. The next prime is 26279411. The reversal of 26279397 is 79397262.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26224641 + 54756 = 5121^2 + 234^2 .

It is not a de Polignac number, because 26279397 - 2⁷ = 26279269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26279327) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 162138 + ... + 162299.

Almost surely, 2^26279397 is an apocalyptic number.

26279397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26279397 is a deficient number, since it is larger than the sum of its proper divisors (12977601).

26279397 is an equidigital number, since it uses as much as digits as its factorization.

26279397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324449 (or 324440 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 26279397 is about 5126.3434336767. The cubic root of 26279397 is about 297.3069981379.

The spelling of 26279397 in words is "twenty-six million, two hundred seventy-nine thousand, three hundred ninety-seven".