380494999 has 2 divisors, whose sum is σ = 380495000. Its totient is φ = 380494998.

The previous prime is 380494981. The next prime is 380495009. The reversal of 380494999 is 999494083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 380494999 - 2¹³ = 380486807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380494949) 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, 190247499 + 190247500.

It is an arithmetic number, because the mean of its divisors is an integer number (190247500).

Almost surely, 2^380494999 is an apocalyptic number.

380494999 is a deficient number, since it is larger than the sum of its proper divisors (1).

380494999 is an equidigital number, since it uses as much as digits as its factorization.

380494999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 380494999 is about 19506.2810140734. The cubic root of 380494999 is about 724.6300127237.

The spelling of 380494999 in words is "three hundred eighty million, four hundred ninety-four thousand, nine hundred ninety-nine".