380045909 has 4 divisors (see below), whose sum is σ = 385718304. Its totient is φ = 374373516.

The previous prime is 380045893. The next prime is 380045947. The reversal of 380045909 is 909540083.

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 380045909 - 2⁴ = 380045893 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 (380045009) 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, 2836097 + ... + 2836230.

It is an arithmetic number, because the mean of its divisors is an integer number (96429576).

Almost surely, 2^380045909 is an apocalyptic number.

It is an amenable number.

380045909 is a deficient number, since it is larger than the sum of its proper divisors (5672395).

380045909 is an equidigital number, since it uses as much as digits as its factorization.

380045909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672394.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 380045909 is about 19494.7661950586. The cubic root of 380045909 is about 724.3448121230.

The spelling of 380045909 in words is "three hundred eighty million, forty-five thousand, nine hundred nine".