12988949 has 4 divisors (see below), whose sum is σ = 13050720. Its totient is φ = 12927180.

The previous prime is 12988931. The next prime is 12988957. The reversal of 12988949 is 94988921.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12988949 is a prime.

It is a super-2 number, since 2×12988949² = 337425592249202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12988897 and 12988906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12988049) 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, 30569 + ... + 30990.

It is an arithmetic number, because the mean of its divisors is an integer number (3262680).

Almost surely, 2^12988949 is an apocalyptic number.

It is an amenable number.

12988949 is a deficient number, since it is larger than the sum of its proper divisors (61771).

12988949 is an equidigital number, since it uses as much as digits as its factorization.

12988949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61770.

The product of its digits is 373248, while the sum is 50.

The square root of 12988949 is about 3604.0184516731. The cubic root of 12988949 is about 235.0668227052.

The spelling of 12988949 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred forty-nine".