26212397 has 4 divisors (see below), whose sum is σ = 26223036. Its totient is φ = 26201760.

The previous prime is 26212363. The next prime is 26212411. The reversal of 26212397 is 79321262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13920361 + 12292036 = 3731^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 26212397 - 2⁸ = 26212141 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 (26212337) 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, 497 + ... + 7257.

It is an arithmetic number, because the mean of its divisors is an integer number (6555759).

Almost surely, 2^26212397 is an apocalyptic number.

It is an amenable number.

26212397 is a deficient number, since it is larger than the sum of its proper divisors (10639).

26212397 is an equidigital number, since it uses as much as digits as its factorization.

26212397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638.

The product of its digits is 9072, while the sum is 32.

The square root of 26212397 is about 5119.8043907946. The cubic root of 26212397 is about 297.0541191572.

The spelling of 26212397 in words is "twenty-six million, two hundred twelve thousand, three hundred ninety-seven".