398423108 has 6 divisors (see below), whose sum is σ = 697240446. Its totient is φ = 199211552.

The previous prime is 398423107. The next prime is 398423119. The reversal of 398423108 is 801324893.

It can be written as a sum of positive squares in only one way, i.e., 365268544 + 33154564 = 19112^2 + 5758^2 .

It is not an unprimeable number, because it can be changed into a prime (398423107) 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 as a sum of consecutive naturals, namely, 49802885 + ... + 49802892.

It is an arithmetic number, because the mean of its divisors is an integer number (116206741).

Almost surely, 2^398423108 is an apocalyptic number.

It is an amenable number.

398423108 is a deficient number, since it is larger than the sum of its proper divisors (298817338).

398423108 is a wasteful number, since it uses less digits than its factorization.

398423108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99605781 (or 99605779 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 398423108 is about 19960.5387702837. The cubic root of 398423108 is about 735.8368046526.

The spelling of 398423108 in words is "three hundred ninety-eight million, four hundred twenty-three thousand, one hundred eight".