26453993 has 2 divisors, whose sum is σ = 26453994. Its totient is φ = 26453992.

The previous prime is 26453981. The next prime is 26454011. The reversal of 26453993 is 39935462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 157609 = 5128^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 26453993 - 2¹² = 26449897 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26453993.

It is not a weakly prime, because it can be changed into another prime (26453953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13226996 + 13226997.

It is an arithmetic number, because the mean of its divisors is an integer number (13226997).

Almost surely, 2^26453993 is an apocalyptic number.

It is an amenable number.

26453993 is a deficient number, since it is larger than the sum of its proper divisors (1).

26453993 is an equidigital number, since it uses as much as digits as its factorization.

26453993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 26453993 is about 5143.3445344445. The cubic root of 26453993 is about 297.9639649834.

The spelling of 26453993 in words is "twenty-six million, four hundred fifty-three thousand, nine hundred ninety-three".