12429887 has 8 divisors (see below), whose sum is σ = 12615696. Its totient is φ = 12245632.

The previous prime is 12429883. The next prime is 12429889. The reversal of 12429887 is 78892421.

12429887 = T₈₃ + T₈₄ + ... + T₄₂₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12429887 - 2² = 12429883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12429883) 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, 35648 + ... + 35994.

It is an arithmetic number, because the mean of its divisors is an integer number (1576962).

Almost surely, 2^12429887 is an apocalyptic number.

12429887 is a deficient number, since it is larger than the sum of its proper divisors (185809).

12429887 is a wasteful number, since it uses less digits than its factorization.

12429887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 64512, while the sum is 41.

The square root of 12429887 is about 3525.6044871766. The cubic root of 12429887 is about 231.6447135717.

The spelling of 12429887 in words is "twelve million, four hundred twenty-nine thousand, eight hundred eighty-seven".