398853805 has 8 divisors (see below), whose sum is σ = 546999552. Its totient is φ = 273499728.

The previous prime is 398853803. The next prime is 398853811. The reversal of 398853805 is 508358893.

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

It is a cyclic number.

It is not a de Polignac number, because 398853805 - 2¹ = 398853803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398853803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697877 + ... + 5697946.

It is an arithmetic number, because the mean of its divisors is an integer number (68374944).

Almost surely, 2^398853805 is an apocalyptic number.

398853805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398853805 is a deficient number, since it is larger than the sum of its proper divisors (148145747).

398853805 is a wasteful number, since it uses less digits than its factorization.

398853805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11395835.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 398853805 is about 19971.3245679900. The cubic root of 398853805 is about 736.1018566942.

The spelling of 398853805 in words is "three hundred ninety-eight million, eight hundred fifty-three thousand, eight hundred five".