11861743 has 4 divisors (see below), whose sum is σ = 11979288. Its totient is φ = 11744200.

The previous prime is 11861713. The next prime is 11861749. The reversal of 11861743 is 34716811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34716811 = 5501 ⋅6311.

It is a cyclic number.

It is not a de Polignac number, because 11861743 - 2⁵ = 11861711 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 (11861749) 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, 58621 + ... + 58822.

It is an arithmetic number, because the mean of its divisors is an integer number (2994822).

Almost surely, 2^11861743 is an apocalyptic number.

11861743 is a deficient number, since it is larger than the sum of its proper divisors (117545).

11861743 is a wasteful number, since it uses less digits than its factorization.

11861743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117544.

The product of its digits is 4032, while the sum is 31.

The square root of 11861743 is about 3444.0881231467. The cubic root of 11861743 is about 228.0602013493.

The spelling of 11861743 in words is "eleven million, eight hundred sixty-one thousand, seven hundred forty-three".