380992505 has 4 divisors (see below), whose sum is σ = 457191012. Its totient is φ = 304794000.

The previous prime is 380992489. The next prime is 380992607. The reversal of 380992505 is 505299083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505299083 = 2903 ⋅174061.

It can be written as a sum of positive squares in 2 ways, for example, as 44049769 + 336942736 = 6637^2 + 18356^2 .

It is not a de Polignac number, because 380992505 - 2⁴ = 380992489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38099246 + ... + 38099255.

It is an arithmetic number, because the mean of its divisors is an integer number (114297753).

Almost surely, 2^380992505 is an apocalyptic number.

It is an amenable number.

380992505 is a deficient number, since it is larger than the sum of its proper divisors (76198507).

380992505 is an equidigital number, since it uses as much as digits as its factorization.

380992505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76198506.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 380992505 is about 19519.0293047580. The cubic root of 380992505 is about 724.9456986679.

It can be divided in two parts, 38099 and 2505, that added together give a palindrome (40604).

The spelling of 380992505 in words is "three hundred eighty million, nine hundred ninety-two thousand, five hundred five".