3388488721 has 2 divisors, whose sum is σ = 3388488722. Its totient is φ = 3388488720.

The previous prime is 3388488689. The next prime is 3388488737. The reversal of 3388488721 is 1278848833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2188836225 + 1199652496 = 46785^2 + 34636^2 .

It is a cyclic number.

It is not a de Polignac number, because 3388488721 - 2⁵ = 3388488689 is a prime.

It is a super-2 number, since 2×3388488721² = 22963711624688431682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3388486721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694244360 + 1694244361.

It is an arithmetic number, because the mean of its divisors is an integer number (1694244361).

Almost surely, 2^3388488721 is an apocalyptic number.

It is an amenable number.

3388488721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3388488721 is an equidigital number, since it uses as much as digits as its factorization.

3388488721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2064384, while the sum is 52.

The square root of 3388488721 is about 58210.7268551081. The cubic root of 3388488721 is about 1501.9956727198.

The spelling of 3388488721 in words is "three billion, three hundred eighty-eight million, four hundred eighty-eight thousand, seven hundred twenty-one".