11867399 has 4 divisors (see below), whose sum is σ = 11985000. Its totient is φ = 11749800.

The previous prime is 11867369. The next prime is 11867407. The reversal of 11867399 is 99376811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99376811 = 5393 ⋅18427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11867399 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 (11867369) 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 3 ways as a sum of consecutive naturals, for example, 58649 + ... + 58850.

It is an arithmetic number, because the mean of its divisors is an integer number (2996250).

Almost surely, 2^11867399 is an apocalyptic number.

11867399 is a deficient number, since it is larger than the sum of its proper divisors (117601).

11867399 is a wasteful number, since it uses less digits than its factorization.

11867399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117600.

The product of its digits is 81648, while the sum is 44.

The square root of 11867399 is about 3444.9091424884. The cubic root of 11867399 is about 228.0964440143.

The spelling of 11867399 in words is "eleven million, eight hundred sixty-seven thousand, three hundred ninety-nine".