398030380 has 24 divisors (see below), whose sum is σ = 911851920. Its totient is φ = 144738240.

The previous prime is 398030351. The next prime is 398030389. The reversal of 398030380 is 83030893.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (398030389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904395 + ... + 904834.

It is an arithmetic number, because the mean of its divisors is an integer number (37993830).

Almost surely, 2^398030380 is an apocalyptic number.

It is an amenable number.

398030380 is an abundant number, since it is smaller than the sum of its proper divisors (513821540).

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

398030380 is a wasteful number, since it uses less digits than its factorization.

398030380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809249 (or 1809247 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 398030380 is about 19950.6987346308. The cubic root of 398030380 is about 735.5949522819.

The spelling of 398030380 in words is "three hundred ninety-eight million, thirty thousand, three hundred eighty".