385115239 has 4 divisors (see below), whose sum is σ = 385705656. Its totient is φ = 384524824.

The previous prime is 385115233. The next prime is 385115257. The reversal of 385115239 is 932511583.

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 385115239 - 2³ = 385115231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385115198 and 385115207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385115231) 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, 294229 + ... + 295534.

It is an arithmetic number, because the mean of its divisors is an integer number (96426414).

Almost surely, 2^385115239 is an apocalyptic number.

385115239 is a deficient number, since it is larger than the sum of its proper divisors (590417).

385115239 is an equidigital number, since it uses as much as digits as its factorization.

385115239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590416.

The product of its digits is 32400, while the sum is 37.

The square root of 385115239 is about 19624.3532122717. The cubic root of 385115239 is about 727.5512111106.

The spelling of 385115239 in words is "three hundred eighty-five million, one hundred fifteen thousand, two hundred thirty-nine".