26491249 has 4 divisors (see below), whose sum is σ = 26653936. Its totient is φ = 26328564.

The previous prime is 26491247. The next prime is 26491259. The reversal of 26491249 is 94219462.

It is a happy number.

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: 94219462 = 2 ⋅47109731.

It is a cyclic number.

It is not a de Polignac number, because 26491249 - 2¹ = 26491247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26491243) 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, 81099 + ... + 81424.

It is an arithmetic number, because the mean of its divisors is an integer number (6663484).

Almost surely, 2^26491249 is an apocalyptic number.

It is an amenable number.

26491249 is a deficient number, since it is larger than the sum of its proper divisors (162687).

26491249 is a wasteful number, since it uses less digits than its factorization.

26491249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162686.

The product of its digits is 31104, while the sum is 37.

The square root of 26491249 is about 5146.9650280529. The cubic root of 26491249 is about 298.1037767475.

The spelling of 26491249 in words is "twenty-six million, four hundred ninety-one thousand, two hundred forty-nine".