398353853 has 2 divisors, whose sum is σ = 398353854. Its totient is φ = 398353852.

The previous prime is 398353847. The next prime is 398353861. The reversal of 398353853 is 358353893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265136089 + 133217764 = 16283^2 + 11542^2 .

It is a cyclic number.

It is not a de Polignac number, because 398353853 - 2⁶ = 398353789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398353798 and 398353807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398353453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199176926 + 199176927.

It is an arithmetic number, because the mean of its divisors is an integer number (199176927).

Almost surely, 2^398353853 is an apocalyptic number.

It is an amenable number.

398353853 is a deficient number, since it is larger than the sum of its proper divisors (1).

398353853 is an equidigital number, since it uses as much as digits as its factorization.

398353853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 47.

The square root of 398353853 is about 19958.8038970275. The cubic root of 398353853 is about 735.7941671233.

The spelling of 398353853 in words is "three hundred ninety-eight million, three hundred fifty-three thousand, eight hundred fifty-three".