380433905 has 16 divisors (see below), whose sum is σ = 484326864. Its totient is φ = 285880320.

The previous prime is 380433883. The next prime is 380433917. The reversal of 380433905 is 509334083.

It can be written as a sum of positive squares in 8 ways, for example, as 9909904 + 370524001 = 3148^2 + 19249^2 .

It is not a de Polignac number, because 380433905 - 2¹⁰ = 380432881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41849 + ... + 50121.

It is an arithmetic number, because the mean of its divisors is an integer number (30270429).

Almost surely, 2^380433905 is an apocalyptic number.

It is an amenable number.

380433905 is a deficient number, since it is larger than the sum of its proper divisors (103892959).

380433905 is a wasteful number, since it uses less digits than its factorization.

380433905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8836.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 380433905 is about 19504.7149428029. The cubic root of 380433905 is about 724.5912273557.

Adding to 380433905 its reverse (509334083), we get a palindrome (889767988).

The spelling of 380433905 in words is "three hundred eighty million, four hundred thirty-three thousand, nine hundred five".