380862409 has 2 divisors, whose sum is σ = 380862410. Its totient is φ = 380862408.

The previous prime is 380862343. The next prime is 380862421. The reversal of 380862409 is 904268083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280462009 + 100400400 = 16747^2 + 10020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380862409 is a prime.

It is not a weakly prime, because it can be changed into another prime (380862439) 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, 190431204 + 190431205.

It is an arithmetic number, because the mean of its divisors is an integer number (190431205).

Almost surely, 2^380862409 is an apocalyptic number.

It is an amenable number.

380862409 is a deficient number, since it is larger than the sum of its proper divisors (1).

380862409 is an equidigital number, since it uses as much as digits as its factorization.

380862409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 380862409 is about 19515.6964774512. The cubic root of 380862409 is about 724.8631744963.

The spelling of 380862409 in words is "three hundred eighty million, eight hundred sixty-two thousand, four hundred nine".