26440943 has 4 divisors (see below), whose sum is σ = 26599440. Its totient is φ = 26282448.

The previous prime is 26440907. The next prime is 26440963. The reversal of 26440943 is 34904462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34904462 = 2 ⋅17452231.

It is a cyclic number.

It is not a de Polignac number, because 26440943 - 2¹⁸ = 26178799 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 (26440963) 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, 78998 + ... + 79331.

It is an arithmetic number, because the mean of its divisors is an integer number (6649860).

Almost surely, 2^26440943 is an apocalyptic number.

26440943 is a deficient number, since it is larger than the sum of its proper divisors (158497).

26440943 is a wasteful number, since it uses less digits than its factorization.

26440943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158496.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 26440943 is about 5142.0757481780. The cubic root of 26440943 is about 297.9149607957.

The spelling of 26440943 in words is "twenty-six million, four hundred forty thousand, nine hundred forty-three".