11892861 has 6 divisors (see below), whose sum is σ = 17178590. Its totient is φ = 7928568.

The previous prime is 11892827. The next prime is 11892869. The reversal of 11892861 is 16829811.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 93636 = 3435^2 + 306^2 .

It is not a de Polignac number, because 11892861 - 2²³ = 3504253 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 (11892869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 660706 + ... + 660723.

Almost surely, 2^11892861 is an apocalyptic number.

It is an amenable number.

11892861 is a deficient number, since it is larger than the sum of its proper divisors (5285729).

11892861 is a wasteful number, since it uses less digits than its factorization.

11892861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321435 (or 1321432 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 11892861 is about 3448.6027605394. The cubic root of 11892861 is about 228.2594576334.

The spelling of 11892861 in words is "eleven million, eight hundred ninety-two thousand, eight hundred sixty-one".