13447429 has 4 divisors (see below), whose sum is σ = 13454784. Its totient is φ = 13440076.

The previous prime is 13447409. The next prime is 13447477. The reversal of 13447429 is 92474431.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92474431 = 7 ⋅13210633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13447429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13447394 and 13447403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13447409) 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, 1434 + ... + 5380.

It is an arithmetic number, because the mean of its divisors is an integer number (3363696).

Almost surely, 2^13447429 is an apocalyptic number.

It is an amenable number.

13447429 is a deficient number, since it is larger than the sum of its proper divisors (7355).

13447429 is an equidigital number, since it uses as much as digits as its factorization.

13447429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354.

The product of its digits is 24192, while the sum is 34.

The square root of 13447429 is about 3667.0736289308. The cubic root of 13447429 is about 237.8006769822.

The spelling of 13447429 in words is "thirteen million, four hundred forty-seven thousand, four hundred twenty-nine".