398735853 has 8 divisors (see below), whose sum is σ = 532100448. Its totient is φ = 265597584.

The previous prime is 398735809. The next prime is 398735873. The reversal of 398735853 is 358537893.

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

It is not a de Polignac number, because 398735853 - 2²⁸ = 130300397 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 398735796 and 398735805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398735803) 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 7 ways as a sum of consecutive naturals, for example, 52426 + ... + 59547.

It is an arithmetic number, because the mean of its divisors is an integer number (66512556).

Almost surely, 2^398735853 is an apocalyptic number.

It is an amenable number.

398735853 is a deficient number, since it is larger than the sum of its proper divisors (133364595).

398735853 is a wasteful number, since it uses less digits than its factorization.

398735853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113163.

The product of its digits is 2721600, while the sum is 51.

The square root of 398735853 is about 19968.3713156582. The cubic root of 398735853 is about 736.0292877100.

The spelling of 398735853 in words is "three hundred ninety-eight million, seven hundred thirty-five thousand, eight hundred fifty-three".