380405783 has 4 divisors (see below), whose sum is σ = 400427160. Its totient is φ = 360384408.

The previous prime is 380405759. The next prime is 380405807. The reversal of 380405783 is 387504083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387504083 = 10663 ⋅36341.

It is an interprime number because it is at equal distance from previous prime (380405759) and next prime (380405807).

It is a cyclic number.

It is not a de Polignac number, because 380405783 - 2⁸ = 380405527 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 (380405713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10010660 + ... + 10010697.

It is an arithmetic number, because the mean of its divisors is an integer number (100106790).

Almost surely, 2^380405783 is an apocalyptic number.

380405783 is a deficient number, since it is larger than the sum of its proper divisors (20021377).

380405783 is a wasteful number, since it uses less digits than its factorization.

380405783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20021376.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 380405783 is about 19503.9940268654. The cubic root of 380405783 is about 724.5733727811.

The spelling of 380405783 in words is "three hundred eighty million, four hundred five thousand, seven hundred eighty-three".