12783951 has 12 divisors (see below), whose sum is σ = 18540912. Its totient is φ = 8487936.

The previous prime is 12783931. The next prime is 12783973. The reversal of 12783951 is 15938721.

It is not a de Polignac number, because 12783951 - 2⁵ = 12783919 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12783931) 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 11 ways as a sum of consecutive naturals, for example, 451 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (1545076).

Almost surely, 2^12783951 is an apocalyptic number.

12783951 is a deficient number, since it is larger than the sum of its proper divisors (5756961).

12783951 is a wasteful number, since it uses less digits than its factorization.

12783951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790 (or 5787 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12783951 is about 3575.4651445651. The cubic root of 12783951 is about 233.8236124166.

The spelling of 12783951 in words is "twelve million, seven hundred eighty-three thousand, nine hundred fifty-one".