389689545 has 16 divisors (see below), whose sum is σ = 712575360. Its totient is φ = 178143744.

The previous prime is 389689537. The next prime is 389689571. The reversal of 389689545 is 545986983.

It is not a de Polignac number, because 389689545 - 2³ = 389689537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1855560 + ... + 1855769.

It is an arithmetic number, because the mean of its divisors is an integer number (44535960).

Almost surely, 2^389689545 is an apocalyptic number.

389689545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

389689545 is a deficient number, since it is larger than the sum of its proper divisors (322885815).

389689545 is a wasteful number, since it uses less digits than its factorization.

389689545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711344.

The product of its digits is 9331200, while the sum is 57.

The square root of 389689545 is about 19740.5558432381. Note that the first 3 decimals coincide. The cubic root of 389689545 is about 730.4204402323.

The spelling of 389689545 in words is "three hundred eighty-nine million, six hundred eighty-nine thousand, five hundred forty-five".