380217689 has 6 divisors (see below), whose sum is σ = 381534606. Its totient is φ = 378905280.

The previous prime is 380217613. The next prime is 380217703. The reversal of 380217689 is 986712083.

It can be written as a sum of positive squares in 3 ways, for example, as 22705225 + 357512464 = 4765^2 + 18908^2 .

It is not a de Polignac number, because 380217689 - 2⁸ = 380217433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380217589) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96029 + ... + 99909.

It is an arithmetic number, because the mean of its divisors is an integer number (63589101).

Almost surely, 2^380217689 is an apocalyptic number.

It is an amenable number.

380217689 is a deficient number, since it is larger than the sum of its proper divisors (1316917).

380217689 is an frugal number, since it uses more digits than its factorization.

380217689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 380217689 is about 19499.1714952200. The cubic root of 380217689 is about 724.4539298257.

The spelling of 380217689 in words is "three hundred eighty million, two hundred seventeen thousand, six hundred eighty-nine".