12479787 has 6 divisors (see below), whose sum is σ = 18026372. Its totient is φ = 8319852.

The previous prime is 12479783. The next prime is 12479791. The reversal of 12479787 is 78797421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12479783) and next prime (12479791).

It is not a de Polignac number, because 12479787 - 2² = 12479783 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12479783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 693313 + ... + 693330.

Almost surely, 2^12479787 is an apocalyptic number.

12479787 is a deficient number, since it is larger than the sum of its proper divisors (5546585).

12479787 is a wasteful number, since it uses less digits than its factorization.

12479787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386649 (or 1386646 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 12479787 is about 3532.6741995265. The cubic root of 12479787 is about 231.9542802793.

The spelling of 12479787 in words is "twelve million, four hundred seventy-nine thousand, seven hundred eighty-seven".