380999523 has 4 divisors (see below), whose sum is σ = 507999368. Its totient is φ = 253999680.

The previous prime is 380999513. The next prime is 380999539. The reversal of 380999523 is 325999083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325999083 = 3 ⋅108666361.

It is not a de Polignac number, because 380999523 - 2⁵ = 380999491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380999513) 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, 63499918 + ... + 63499923.

It is an arithmetic number, because the mean of its divisors is an integer number (126999842).

Almost surely, 2^380999523 is an apocalyptic number.

380999523 is a deficient number, since it is larger than the sum of its proper divisors (126999845).

380999523 is a wasteful number, since it uses less digits than its factorization.

380999523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126999844.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 380999523 is about 19519.2090772142. The cubic root of 380999523 is about 724.9501498820.

The spelling of 380999523 in words is "three hundred eighty million, nine hundred ninety-nine thousand, five hundred twenty-three".