12749847 has 16 divisors (see below), whose sum is σ = 19636992. Its totient is φ = 7272320.

The previous prime is 12749827. The next prime is 12749851. The reversal of 12749847 is 74894721.

It is a happy number.

It is not a de Polignac number, because 12749847 - 2⁶ = 12749783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12749799 and 12749808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10803 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (1227312).

Almost surely, 2^12749847 is an apocalyptic number.

12749847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12749847 is a deficient number, since it is larger than the sum of its proper divisors (6887145).

12749847 is a wasteful number, since it uses less digits than its factorization.

12749847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22758.

The product of its digits is 112896, while the sum is 42.

The square root of 12749847 is about 3570.6927899219. The cubic root of 12749847 is about 233.6155019483.

The spelling of 12749847 in words is "twelve million, seven hundred forty-nine thousand, eight hundred forty-seven".