389253533 has 2 divisors, whose sum is σ = 389253534. Its totient is φ = 389253532.

The previous prime is 389253511. The next prime is 389253547. The reversal of 389253533 is 335352983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242674084 + 146579449 = 15578^2 + 12107^2 .

It is a cyclic number.

It is not a de Polignac number, because 389253533 - 2²⁴ = 372476317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389253833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194626766 + 194626767.

It is an arithmetic number, because the mean of its divisors is an integer number (194626767).

Almost surely, 2^389253533 is an apocalyptic number.

It is an amenable number.

389253533 is a deficient number, since it is larger than the sum of its proper divisors (1).

389253533 is an equidigital number, since it uses as much as digits as its factorization.

389253533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 41.

The square root of 389253533 is about 19729.5091930844. The cubic root of 389253533 is about 730.1479233606.

The spelling of 389253533 in words is "three hundred eighty-nine million, two hundred fifty-three thousand, five hundred thirty-three".