12438877 has 4 divisors (see below), whose sum is σ = 13569696. Its totient is φ = 11308060.

The previous prime is 12438871. The next prime is 12438887. The reversal of 12438877 is 77883421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12438877 - 2³ = 12438869 is a prime.

It is a super-2 number, since 2×12438877² = 309451322042258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438871) 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, 565393 + ... + 565414.

It is an arithmetic number, because the mean of its divisors is an integer number (3392424).

Almost surely, 2^12438877 is an apocalyptic number.

It is an amenable number.

12438877 is a deficient number, since it is larger than the sum of its proper divisors (1130819).

12438877 is a wasteful number, since it uses less digits than its factorization.

12438877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130818.

The product of its digits is 75264, while the sum is 40.

The square root of 12438877 is about 3526.8792153971. The cubic root of 12438877 is about 231.7005463163.

The spelling of 12438877 in words is "twelve million, four hundred thirty-eight thousand, eight hundred seventy-seven".