389747540 has 48 divisors (see below), whose sum is σ = 1007352192. Its totient is φ = 123348096.

The previous prime is 389747503. The next prime is 389747543. The reversal of 389747540 is 45747983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389747543) 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, 105254 + ... + 108893.

It is an arithmetic number, because the mean of its divisors is an integer number (20986504).

Almost surely, 2^389747540 is an apocalyptic number.

It is an amenable number.

389747540 is an abundant number, since it is smaller than the sum of its proper divisors (617604652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389747540 is a wasteful number, since it uses less digits than its factorization.

389747540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214176 (or 214174 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 389747540 is about 19742.0247188580. The cubic root of 389747540 is about 730.4566730341.

The spelling of 389747540 in words is "three hundred eighty-nine million, seven hundred forty-seven thousand, five hundred forty".