380820959 has 4 divisors (see below), whose sum is σ = 397378416. Its totient is φ = 364263504.

The previous prime is 380820907. The next prime is 380820977. The reversal of 380820959 is 959028083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380820959 - 2⁸ = 380820703 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 (380810959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8278694 + ... + 8278739.

It is an arithmetic number, because the mean of its divisors is an integer number (99344604).

Almost surely, 2^380820959 is an apocalyptic number.

380820959 is a deficient number, since it is larger than the sum of its proper divisors (16557457).

380820959 is a wasteful number, since it uses less digits than its factorization.

380820959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16557456.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 380820959 is about 19514.6344828695. The cubic root of 380820959 is about 724.8368774506.

The spelling of 380820959 in words is "three hundred eighty million, eight hundred twenty thousand, nine hundred fifty-nine".