389513345 has 16 divisors (see below), whose sum is σ = 505265040. Its totient is φ = 286558464.

The previous prime is 389513279. The next prime is 389513347. The reversal of 389513345 is 543315983.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 44742721 + 344770624 = 6689^2 + 18568^2 .

It is a cyclic number.

It is not a de Polignac number, because 389513345 - 2¹⁶ = 389447809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389513347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6347 + ... + 28623.

It is an arithmetic number, because the mean of its divisors is an integer number (31579065).

Almost surely, 2^389513345 is an apocalyptic number.

It is an amenable number.

389513345 is a deficient number, since it is larger than the sum of its proper divisors (115751695).

389513345 is a wasteful number, since it uses less digits than its factorization.

389513345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22564.

The product of its digits is 194400, while the sum is 41.

The square root of 389513345 is about 19736.0924450612. The cubic root of 389513345 is about 730.3103359322.

The spelling of 389513345 in words is "three hundred eighty-nine million, five hundred thirteen thousand, three hundred forty-five".