3854390321 has 2 divisors, whose sum is σ = 3854390322. Its totient is φ = 3854390320.

The previous prime is 3854390303. The next prime is 3854390333. The reversal of 3854390321 is 1230934583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2921943025 + 932447296 = 54055^2 + 30536^2 .

It is an emirp because it is prime and its reverse (1230934583) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3854390321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3854390021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927195160 + 1927195161.

It is an arithmetic number, because the mean of its divisors is an integer number (1927195161).

Almost surely, 2^3854390321 is an apocalyptic number.

It is an amenable number.

3854390321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3854390321 is an equidigital number, since it uses as much as digits as its factorization.

3854390321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 3854390321 is about 62083.7363646873. The cubic root of 3854390321 is about 1567.9007361639.

The spelling of 3854390321 in words is "three billion, eight hundred fifty-four million, three hundred ninety thousand, three hundred twenty-one".