389221092 has 48 divisors (see below), whose sum is σ = 1086718080. Its totient is φ = 119759904.

The previous prime is 389221087. The next prime is 389221097. The reversal of 389221092 is 290122983.

It is an interprime number because it is at equal distance from previous prime (389221087) and next prime (389221097).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (389221097) 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, 137208 + ... + 140015.

It is an arithmetic number, because the mean of its divisors is an integer number (22639960).

Almost surely, 2^389221092 is an apocalyptic number.

It is an amenable number.

389221092 is an abundant number, since it is smaller than the sum of its proper divisors (697496988).

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

389221092 is a wasteful number, since it uses less digits than its factorization.

389221092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277249 (or 277241 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 389221092 is about 19728.6870318326. The cubic root of 389221092 is about 730.1276389061.

The spelling of 389221092 in words is "three hundred eighty-nine million, two hundred twenty-one thousand, ninety-two".