398313850 has 36 divisors (see below), whose sum is σ = 814350222. Its totient is φ = 144839200.

The previous prime is 398313841. The next prime is 398313857. The reversal of 398313850 is 58313893.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 214358881 + 183954969 = 14641^2 + 13563^2 .

It is not an unprimeable number, because it can be changed into a prime (398313857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26869 + ... + 38968.

Almost surely, 2^398313850 is an apocalyptic number.

398313850 is an abundant number, since it is smaller than the sum of its proper divisors (416036372).

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

398313850 is a wasteful number, since it uses less digits than its factorization.

398313850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65871 (or 65855 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 398313850 is about 19957.8017326558. The cubic root of 398313850 is about 735.7695366269.

It can be divided in two parts, 39831 and 3850, that added together give a square (43681 = 209²).

The spelling of 398313850 in words is "three hundred ninety-eight million, three hundred thirteen thousand, eight hundred fifty".