389974998 has 64 divisors (see below), whose sum is σ = 917908992. Its totient is φ = 108138240.

The previous prime is 389974997. The next prime is 389975011. The reversal of 389974998 is 899479983.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389974993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326290 + ... + 327482.

It is an arithmetic number, because the mean of its divisors is an integer number (14342328).

Almost surely, 2^389974998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389974998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458954496).

389974998 is an abundant number, since it is smaller than the sum of its proper divisors (527933994).

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

389974998 is a wasteful number, since it uses less digits than its factorization.

389974998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429.

The product of its digits is 35271936, while the sum is 66.

The square root of 389974998 is about 19747.7846352445. The cubic root of 389974998 is about 730.5987444058.

The spelling of 389974998 in words is "three hundred eighty-nine million, nine hundred seventy-four thousand, nine hundred ninety-eight".