12815949 has 8 divisors (see below), whose sum is σ = 17549920. Its totient is φ = 8312976.

The previous prime is 12815923. The next prime is 12815969. The reversal of 12815949 is 94951821.

12815949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12815949 - 2⁹ = 12815437 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 (12815969) 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, 57619 + ... + 57840.

It is an arithmetic number, because the mean of its divisors is an integer number (2193740).

Almost surely, 2^12815949 is an apocalyptic number.

It is an amenable number.

12815949 is a deficient number, since it is larger than the sum of its proper divisors (4733971).

12815949 is a wasteful number, since it uses less digits than its factorization.

12815949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115499.

The product of its digits is 25920, while the sum is 39.

The square root of 12815949 is about 3579.9370106190. The cubic root of 12815949 is about 234.0185353131.

The spelling of 12815949 in words is "twelve million, eight hundred fifteen thousand, nine hundred forty-nine".