12629409 has 16 divisors (see below), whose sum is σ = 18393984. Its totient is φ = 7660800.

The previous prime is 12629387. The next prime is 12629411. The reversal of 12629409 is 90492621.

It is not a de Polignac number, because 12629409 - 2⁵ = 12629377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12629409.

It is not an unprimeable number, because it can be changed into a prime (12629479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (1149624).

Almost surely, 2^12629409 is an apocalyptic number.

It is an amenable number.

12629409 is a deficient number, since it is larger than the sum of its proper divisors (5764575).

12629409 is a wasteful number, since it uses less digits than its factorization.

12629409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 12629409 is about 3553.7879790443. The cubic root of 12629409 is about 232.8775781825.

The spelling of 12629409 in words is "twelve million, six hundred twenty-nine thousand, four hundred nine".