389750533 has 4 divisors (see below), whose sum is σ = 396139948. Its totient is φ = 383361120.

The previous prime is 389750509. The next prime is 389750561. The reversal of 389750533 is 335057983.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13118884 + 376631649 = 3622^2 + 19407^2 .

It is a cyclic number.

It is not a de Polignac number, because 389750533 - 2²¹ = 387653381 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 389750533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389750503) 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, 3194616 + ... + 3194737.

It is an arithmetic number, because the mean of its divisors is an integer number (99034987).

Almost surely, 2^389750533 is an apocalyptic number.

It is an amenable number.

389750533 is a deficient number, since it is larger than the sum of its proper divisors (6389415).

389750533 is an equidigital number, since it uses as much as digits as its factorization.

389750533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389414.

The product of its (nonzero) digits is 340200, while the sum is 43.

The square root of 389750533 is about 19742.1005214744. The cubic root of 389750533 is about 730.4585428353.

The spelling of 389750533 in words is "three hundred eighty-nine million, seven hundred fifty thousand, five hundred thirty-three".