12239881 has 8 divisors (see below), whose sum is σ = 13236480. Its totient is φ = 11274048.

The previous prime is 12239869. The next prime is 12239897. The reversal of 12239881 is 18893221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12239881 - 2⁷ = 12239753 is a prime.

It is a super-2 number, since 2×12239881² = 299629373788322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12239861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6861 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (1654560).

Almost surely, 2^12239881 is an apocalyptic number.

It is an amenable number.

12239881 is a deficient number, since it is larger than the sum of its proper divisors (996599).

12239881 is a wasteful number, since it uses less digits than its factorization.

12239881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15383.

The product of its digits is 6912, while the sum is 34.

The square root of 12239881 is about 3498.5541299228. The cubic root of 12239881 is about 230.4583236417.

The spelling of 12239881 in words is "twelve million, two hundred thirty-nine thousand, eight hundred eighty-one".