12499993 has 4 divisors (see below), whose sum is σ = 13636368. Its totient is φ = 11363620.

The previous prime is 12499987. The next prime is 12499999. The reversal of 12499993 is 39999421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12499987) and next prime (12499999).

It is a cyclic number.

It is not a de Polignac number, because 12499993 - 2⁹ = 12499481 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

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 3 ways as a sum of consecutive naturals, for example, 568171 + ... + 568192.

It is an arithmetic number, because the mean of its divisors is an integer number (3409092).

Almost surely, 2^12499993 is an apocalyptic number.

It is an amenable number.

12499993 is a deficient number, since it is larger than the sum of its proper divisors (1136375).

12499993 is a wasteful number, since it uses less digits than its factorization.

12499993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136374.

The product of its digits is 157464, while the sum is 46.

The square root of 12499993 is about 3535.5329159831. The cubic root of 12499993 is about 232.0793983591.

It can be divided in two parts, 12 and 499993, that added together give a palindrome (500005).

The spelling of 12499993 in words is "twelve million, four hundred ninety-nine thousand, nine hundred ninety-three".