398635848 has 108 divisors (see below), whose sum is σ = 1175570955. Its totient is φ = 121979520.

The previous prime is 398635841. The next prime is 398635849. The reversal of 398635848 is 848536893.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 31606884 + 367028964 = 5622^2 + 19158^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14118.

It is a junction number, because it is equal to n+sod(n) for n = 398635794 and 398635803.

It is not an unprimeable number, because it can be changed into a prime (398635841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2202318 + ... + 2202498.

Almost surely, 2^398635848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398635848

398635848 is an abundant number, since it is smaller than the sum of its proper divisors (776935107).

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

398635848 is a wasteful number, since it uses less digits than its factorization.

398635848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 199 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 398635848 is about 19965.8670735834. The cubic root of 398635848 is about 735.9677492563.

The spelling of 398635848 in words is "three hundred ninety-eight million, six hundred thirty-five thousand, eight hundred forty-eight".