304020401389 has 2 divisors, whose sum is σ = 304020401390. Its totient is φ = 304020401388.

The previous prime is 304020401359. The next prime is 304020401401. The reversal of 304020401389 is 983104020403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295288994025 + 8731407364 = 543405^2 + 93442^2 .

It is a cyclic number.

It is not a de Polignac number, because 304020401389 - 2⁷ = 304020401261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304020401339) 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, 152010200694 + 152010200695.

It is an arithmetic number, because the mean of its divisors is an integer number (152010200695).

Almost surely, 2^304020401389 is an apocalyptic number.

It is an amenable number.

304020401389 is a deficient number, since it is larger than the sum of its proper divisors (1).

304020401389 is an equidigital number, since it uses as much as digits as its factorization.

304020401389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 304020401389 in words is "three hundred four billion, twenty million, four hundred one thousand, three hundred eighty-nine".