389430980 has 12 divisors (see below), whose sum is σ = 817805100. Its totient is φ = 155772384.

The previous prime is 389430971. The next prime is 389430989. The reversal of 389430980 is 89034983.

It is an interprime number because it is at equal distance from previous prime (389430971) and next prime (389430989).

It can be written as a sum of positive squares in 2 ways, for example, as 92006464 + 297424516 = 9592^2 + 17246^2 .

It is not an unprimeable number, because it can be changed into a prime (389430989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9735755 + ... + 9735794.

It is an arithmetic number, because the mean of its divisors is an integer number (68150425).

Almost surely, 2^389430980 is an apocalyptic number.

It is an amenable number.

389430980 is an abundant number, since it is smaller than the sum of its proper divisors (428374120).

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

389430980 is a wasteful number, since it uses less digits than its factorization.

389430980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19471558 (or 19471556 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 389430980 is about 19734.0056754831. The cubic root of 389430980 is about 730.2588560946.

The spelling of 389430980 in words is "three hundred eighty-nine million, four hundred thirty thousand, nine hundred eighty".