12499994 has 16 divisors (see below), whose sum is σ = 21071232. Its totient is φ = 5518128.

The previous prime is 12499987. The next prime is 12499999. The reversal of 12499994 is 49999421.

It is not an unprimeable number, because it can be changed into a prime (12499999) 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, 9854 + ... + 11049.

It is an arithmetic number, because the mean of its divisors is an integer number (1316952).

Almost surely, 2^12499994 is an apocalyptic number.

12499994 is a deficient number, since it is larger than the sum of its proper divisors (8571238).

12499994 is a wasteful number, since it uses less digits than its factorization.

12499994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941.

The product of its digits is 209952, while the sum is 47.

The square root of 12499994 is about 3535.5330574045. The cubic root of 12499994 is about 232.0794045479.

It can be divided in two parts, 1249 and 9994, that multiplied together give a triangular number (12482506 = T₄₉₉₆).

The spelling of 12499994 in words is "twelve million, four hundred ninety-nine thousand, nine hundred ninety-four".