380436449 has 4 divisors (see below), whose sum is σ = 400459440. Its totient is φ = 360413460.

The previous prime is 380436409. The next prime is 380436457. The reversal of 380436449 is 944634083.

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 380436449 - 2²⁰ = 379387873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (380436409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10011467 + ... + 10011504.

It is an arithmetic number, because the mean of its divisors is an integer number (100114860).

Almost surely, 2^380436449 is an apocalyptic number.

It is an amenable number.

380436449 is a deficient number, since it is larger than the sum of its proper divisors (20022991).

380436449 is a wasteful number, since it uses less digits than its factorization.

380436449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022990.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 380436449 is about 19504.7801576947. The cubic root of 380436449 is about 724.5928424904.

The spelling of 380436449 in words is "three hundred eighty million, four hundred thirty-six thousand, four hundred forty-nine".