26489497 has 4 divisors (see below), whose sum is σ = 26505936. Its totient is φ = 26473060.

The previous prime is 26489479. The next prime is 26489509. The reversal of 26489497 is 79498462.

26489497 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79498462 = 2 ⋅39749231.

It is a cyclic number.

It is not a de Polignac number, because 26489497 - 2¹⁹ = 25965209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26489497.

It is not an unprimeable number, because it can be changed into a prime (26489467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5503 + ... + 9124.

It is an arithmetic number, because the mean of its divisors is an integer number (6626484).

Almost surely, 2^26489497 is an apocalyptic number.

It is an amenable number.

26489497 is a deficient number, since it is larger than the sum of its proper divisors (16439).

26489497 is a wasteful number, since it uses less digits than its factorization.

26489497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438.

The product of its digits is 870912, while the sum is 49.

The square root of 26489497 is about 5146.7948278516. The cubic root of 26489497 is about 298.0972049002.

The spelling of 26489497 in words is "twenty-six million, four hundred eighty-nine thousand, four hundred ninety-seven".