389221242 has 16 divisors (see below), whose sum is σ = 778636992. Its totient is φ = 129708000.

The previous prime is 389221223. The next prime is 389221243. The reversal of 389221242 is 242122983.

It is not an unprimeable number, because it can be changed into a prime (389221243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38742 + ... + 47742.

It is an arithmetic number, because the mean of its divisors is an integer number (48664812).

Almost surely, 2^389221242 is an apocalyptic number.

389221242 is an abundant number, since it is smaller than the sum of its proper divisors (389415750).

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

389221242 is a wasteful number, since it uses less digits than its factorization.

389221242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16213.

The product of its digits is 13824, while the sum is 33.

The square root of 389221242 is about 19728.6908334030. The cubic root of 389221242 is about 730.1277326995.

The spelling of 389221242 in words is "three hundred eighty-nine million, two hundred twenty-one thousand, two hundred forty-two".