380395993 has 2 divisors, whose sum is σ = 380395994. Its totient is φ = 380395992.

The previous prime is 380395969. The next prime is 380396039. The reversal of 380395993 is 399593083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374693449 + 5702544 = 19357^2 + 2388^2 .

It is an emirp because it is prime and its reverse (399593083) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380395993 is a prime.

It is a super-2 number, since 2×380395993² = 289402222980912098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (380395933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190197996 + 190197997.

It is an arithmetic number, because the mean of its divisors is an integer number (190197997).

Almost surely, 2^380395993 is an apocalyptic number.

It is an amenable number.

380395993 is a deficient number, since it is larger than the sum of its proper divisors (1).

380395993 is an equidigital number, since it uses as much as digits as its factorization.

380395993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 49.

The square root of 380395993 is about 19503.7430510146. The cubic root of 380395993 is about 724.5671569326.

The spelling of 380395993 in words is "three hundred eighty million, three hundred ninety-five thousand, nine hundred ninety-three".