389154090 has 128 divisors (see below), whose sum is σ = 1043788032. Its totient is φ = 92252160.

The previous prime is 389154071. The next prime is 389154091. The reversal of 389154090 is 90451983.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (389154091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1384750 + ... + 1385030.

It is an arithmetic number, because the mean of its divisors is an integer number (8154594).

Almost surely, 2^389154090 is an apocalyptic number.

389154090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389154090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521894016).

389154090 is an abundant number, since it is smaller than the sum of its proper divisors (654633942).

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

389154090 is a wasteful number, since it uses less digits than its factorization.

389154090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 389154090 is about 19726.9888731149. The cubic root of 389154090 is about 730.0857408517.

The spelling of 389154090 in words is "three hundred eighty-nine million, one hundred fifty-four thousand, ninety".