3356438729 has 4 divisors (see below), whose sum is σ = 3835929984. Its totient is φ = 2876947476.

The previous prime is 3356438713. The next prime is 3356438731. The reversal of 3356438729 is 9278346533.

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 not a de Polignac number, because 3356438729 - 2⁴ = 3356438713 is a prime.

It is a super-2 number, since 2×3356438729² = 22531361883062270882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3356438429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239745617 + ... + 239745630.

It is an arithmetic number, because the mean of its divisors is an integer number (958982496).

Almost surely, 2^3356438729 is an apocalyptic number.

It is an amenable number.

3356438729 is a deficient number, since it is larger than the sum of its proper divisors (479491255).

3356438729 is an equidigital number, since it uses as much as digits as its factorization.

3356438729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479491254.

The product of its digits is 3265920, while the sum is 50.

The square root of 3356438729 is about 57934.7799598825. The cubic root of 3356438729 is about 1497.2451256163.

The spelling of 3356438729 in words is "three billion, three hundred fifty-six million, four hundred thirty-eight thousand, seven hundred twenty-nine".