398005424 has 20 divisors (see below), whose sum is σ = 772666320. Its totient is φ = 198607680.

The previous prime is 398005423. The next prime is 398005451. The reversal of 398005424 is 424500893.

It is not an unprimeable number, because it can be changed into a prime (398005423) 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, 16292 + ... + 32579.

It is an arithmetic number, because the mean of its divisors is an integer number (38633316).

Almost surely, 2^398005424 is an apocalyptic number.

It is an amenable number.

398005424 is a deficient number, since it is larger than the sum of its proper divisors (374660896).

398005424 is a wasteful number, since it uses less digits than its factorization.

398005424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49388 (or 49382 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 398005424 is about 19950.0732830734. The cubic root of 398005424 is about 735.5795783371.

The spelling of 398005424 in words is "three hundred ninety-eight million, five thousand, four hundred twenty-four".