385908433 has 4 divisors (see below), whose sum is σ = 387929088. Its totient is φ = 383887780.

The previous prime is 385908407. The next prime is 385908463. The reversal of 385908433 is 334809583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385908433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385908433.

It is not an unprimeable number, because it can be changed into a prime (385908403) 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, 1010041 + ... + 1010422.

It is an arithmetic number, because the mean of its divisors is an integer number (96982272).

Almost surely, 2^385908433 is an apocalyptic number.

It is an amenable number.

385908433 is a deficient number, since it is larger than the sum of its proper divisors (2020655).

385908433 is a wasteful number, since it uses less digits than its factorization.

385908433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020654.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 385908433 is about 19644.5522473789. The cubic root of 385908433 is about 728.0503634451.

The spelling of 385908433 in words is "three hundred eighty-five million, nine hundred eight thousand, four hundred thirty-three".