385021775239 has 4 divisors (see below), whose sum is σ = 393975770056. Its totient is φ = 376067780424.

The previous prime is 385021775233. The next prime is 385021775273. The reversal of 385021775239 is 932577120583.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385021775239 - 2⁷ = 385021775111 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 (385021775233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4476997344 + ... + 4476997429.

It is an arithmetic number, because the mean of its divisors is an integer number (98493942514).

Almost surely, 2^385021775239 is an apocalyptic number.

385021775239 is a deficient number, since it is larger than the sum of its proper divisors (8953994817).

385021775239 is an equidigital number, since it uses as much as digits as its factorization.

385021775239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8953994816.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 385021775239 in words is "three hundred eighty-five billion, twenty-one million, seven hundred seventy-five thousand, two hundred thirty-nine".