3229728399 has 6 divisors (see below), whose sum is σ = 4665163256. Its totient is φ = 2153152260.

The previous prime is 3229728389. The next prime is 3229728413. The reversal of 3229728399 is 9938279223.

It is a happy number.

3229728399 is a `hidden beast` number, since 3 + 229 + 7 + 28 + 399 = 666.

It is not a de Polignac number, because 3229728399 - 2⁹ = 3229727887 is a prime.

It is a super-2 number, since 2×3229728399² = 20862291062614206402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3229728329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179429347 + ... + 179429364.

Almost surely, 2^3229728399 is an apocalyptic number.

3229728399 is a deficient number, since it is larger than the sum of its proper divisors (1435434857).

3229728399 is a wasteful number, since it uses less digits than its factorization.

3229728399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358858717 (or 358858714 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 3229728399 is about 56830.6994414111. The cubic root of 3229728399 is about 1478.1618888472.

The spelling of 3229728399 in words is "three billion, two hundred twenty-nine million, seven hundred twenty-eight thousand, three hundred ninety-nine".