12749992 has 8 divisors (see below), whose sum is σ = 23906250. Its totient is φ = 6374992.

The previous prime is 12749953. The next prime is 12750011. The reversal of 12749992 is 29994721.

It can be written as a sum of positive squares in only one way, i.e., 9947716 + 2802276 = 3154^2 + 1674^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 796867 + ... + 796882.

Almost surely, 2^12749992 is an apocalyptic number.

It is an amenable number.

12749992 is a deficient number, since it is larger than the sum of its proper divisors (11156258).

12749992 is a wasteful number, since it uses less digits than its factorization.

12749992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593755 (or 1593751 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 12749992 is about 3570.7130940472. The cubic root of 12749992 is about 233.6163875568.

The spelling of 12749992 in words is "twelve million, seven hundred forty-nine thousand, nine hundred ninety-two".