380017209 has 16 divisors (see below), whose sum is σ = 595272384. Its totient is φ = 212596800.

The previous prime is 380017207. The next prime is 380017217. The reversal of 380017209 is 902710083.

It is a happy number.

It is not a de Polignac number, because 380017209 - 2¹ = 380017207 is a prime.

It is a super-2 number, since 2×380017209² = 288826158272299362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380017207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442482 + ... + 443339.

It is an arithmetic number, because the mean of its divisors is an integer number (37204524).

Almost surely, 2^380017209 is an apocalyptic number.

380017209 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

380017209 is a deficient number, since it is larger than the sum of its proper divisors (215255175).

380017209 is a wasteful number, since it uses less digits than its factorization.

380017209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885848.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 380017209 is about 19494.0300861571. The cubic root of 380017209 is about 724.3265781685.

The spelling of 380017209 in words is "three hundred eighty million, seventeen thousand, two hundred nine".