380427209 has 4 divisors (see below), whose sum is σ = 380556240. Its totient is φ = 380298180.

The previous prime is 380427197. The next prime is 380427227. The reversal of 380427209 is 902724083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 380427209 - 2⁸ = 380426953 is a prime.

It is a super-2 number, since 2×380427209² = 289449722695059362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320427209) 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 in 3 ways as a sum of consecutive naturals, for example, 59987 + ... + 66024.

It is an arithmetic number, because the mean of its divisors is an integer number (95139060).

Almost surely, 2^380427209 is an apocalyptic number.

It is an amenable number.

380427209 is a deficient number, since it is larger than the sum of its proper divisors (129031).

380427209 is a wasteful number, since it uses less digits than its factorization.

380427209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129030.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 380427209 is about 19504.5432912437. The cubic root of 380427209 is about 724.5869761649.

It can be divided in two parts, 3804 and 27209, that added together give a palindrome (31013).

The spelling of 380427209 in words is "three hundred eighty million, four hundred twenty-seven thousand, two hundred nine".