12651939 has 12 divisors (see below), whose sum is σ = 18496296. Its totient is φ = 8332512.

The previous prime is 12651923. The next prime is 12651941. The reversal of 12651939 is 93915621.

12651939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12651939 - 2⁴ = 12651923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12651839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7722 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (1541358).

Almost surely, 2^12651939 is an apocalyptic number.

12651939 is a deficient number, since it is larger than the sum of its proper divisors (5844357).

12651939 is a wasteful number, since it uses less digits than its factorization.

12651939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17026 (or 17023 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 12651939 is about 3556.9564236858. The cubic root of 12651939 is about 233.0159751307.

The spelling of 12651939 in words is "twelve million, six hundred fifty-one thousand, nine hundred thirty-nine".