3728920399 has 2 divisors, whose sum is σ = 3728920400. Its totient is φ = 3728920398.

The previous prime is 3728920337. The next prime is 3728920493. The reversal of 3728920399 is 9930298273.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3728920399 - 2⁷ = 3728920271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3728920799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1864460199 + 1864460200.

It is an arithmetic number, because the mean of its divisors is an integer number (1864460200).

Almost surely, 2^3728920399 is an apocalyptic number.

3728920399 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728920399 is an equidigital number, since it uses as much as digits as its factorization.

3728920399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 3728920399 is about 61064.8867926569. The cubic root of 3728920399 is about 1550.6997047630.

The spelling of 3728920399 in words is "three billion, seven hundred twenty-eight million, nine hundred twenty thousand, three hundred ninety-nine".