398008798 has 8 divisors (see below), whose sum is σ = 651287160. Its totient is φ = 180913080.

The previous prime is 398008763. The next prime is 398008799. The reversal of 398008798 is 897800893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×398008798² = 316822006570809608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398008799) 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 3 ways as a sum of consecutive naturals, for example, 9045633 + ... + 9045676.

It is an arithmetic number, because the mean of its divisors is an integer number (81410895).

Almost surely, 2^398008798 is an apocalyptic number.

398008798 is a deficient number, since it is larger than the sum of its proper divisors (253278362).

398008798 is a wasteful number, since it uses less digits than its factorization.

398008798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18091322.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 398008798 is about 19950.1578439871. The cubic root of 398008798 is about 735.5816569005.

The spelling of 398008798 in words is "three hundred ninety-eight million, eight thousand, seven hundred ninety-eight".