398853654 has 16 divisors (see below), whose sum is σ = 800078448. Its totient is φ = 132556032.

The previous prime is 398853619. The next prime is 398853661. The reversal of 398853654 is 456358893.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 398853597 and 398853606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96607 + ... + 100650.

It is an arithmetic number, because the mean of its divisors is an integer number (50004903).

Almost surely, 2^398853654 is an apocalyptic number.

398853654 is an abundant number, since it is smaller than the sum of its proper divisors (401224794).

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

398853654 is a wasteful number, since it uses less digits than its factorization.

398853654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197599.

The product of its digits is 3110400, while the sum is 51.

The square root of 398853654 is about 19971.3207875694. The cubic root of 398853654 is about 736.1017638018.

The spelling of 398853654 in words is "three hundred ninety-eight million, eight hundred fifty-three thousand, six hundred fifty-four".