3212429749 has 4 divisors (see below), whose sum is σ = 3215926240. Its totient is φ = 3208933260.

The previous prime is 3212429747. The next prime is 3212429761. The reversal of 3212429749 is 9479242123.

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 3212429749 - 2¹ = 3212429747 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 (3212429747) 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, 1746867 + ... + 1748704.

It is an arithmetic number, because the mean of its divisors is an integer number (803981560).

Almost surely, 2^3212429749 is an apocalyptic number.

It is an amenable number.

3212429749 is a deficient number, since it is larger than the sum of its proper divisors (3496491).

3212429749 is an equidigital number, since it uses as much as digits as its factorization.

3212429749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496490.

The product of its digits is 217728, while the sum is 43.

The square root of 3212429749 is about 56678.3005126301. The cubic root of 3212429749 is about 1475.5181171679.

The spelling of 3212429749 in words is "three billion, two hundred twelve million, four hundred twenty-nine thousand, seven hundred forty-nine".