26940609 has 12 divisors (see below), whose sum is σ = 38972752. Its totient is φ = 17933400.

The previous prime is 26940601. The next prime is 26940611. The reversal of 26940609 is 90604962.

26940609 is a `hidden beast` number, since 2 + 6 + 9 + 40 + 609 = 666.

It is not a de Polignac number, because 26940609 - 2³ = 26940601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26940601) 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 11 ways as a sum of consecutive naturals, for example, 5454 + ... + 9144.

Almost surely, 2^26940609 is an apocalyptic number.

It is an amenable number.

26940609 is a deficient number, since it is larger than the sum of its proper divisors (12032143).

26940609 is a wasteful number, since it uses less digits than its factorization.

26940609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508 (or 4505 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 26940609 is about 5190.4343748862. The cubic root of 26940609 is about 299.7798718515.

The spelling of 26940609 in words is "twenty-six million, nine hundred forty thousand, six hundred nine".