380403409 has 4 divisors (see below), whose sum is σ = 380442420. Its totient is φ = 380364400.

The previous prime is 380403403. The next prime is 380403467. The reversal of 380403409 is 904304083.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 904304083 = 113 ⋅8002691.

It can be written as a sum of positive squares in 2 ways, for example, as 204575809 + 175827600 = 14303^2 + 13260^2 .

It is a cyclic number.

It is not a de Polignac number, because 380403409 - 2⁵ = 380403377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380403403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9447 + ... + 29155.

It is an arithmetic number, because the mean of its divisors is an integer number (95110605).

Almost surely, 2^380403409 is an apocalyptic number.

It is an amenable number.

380403409 is a deficient number, since it is larger than the sum of its proper divisors (39011).

380403409 is a wasteful number, since it uses less digits than its factorization.

380403409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39010.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 380403409 is about 19503.9331674409. The cubic root of 380403409 is about 724.5718654952.

The spelling of 380403409 in words is "three hundred eighty million, four hundred three thousand, four hundred nine".