398893633876 has 6 divisors (see below), whose sum is σ = 698063859290. Its totient is φ = 199446816936.

The previous prime is 398893633843. The next prime is 398893633889. The reversal of 398893633876 is 678336398893.

It can be written as a sum of positive squares in only one way, i.e., 320213383876 + 78680250000 = 565874^2 + 280500^2 .

It is a super-2 number, since 2×398893633876² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398893633799 and 398893633808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49861704231 + ... + 49861704238.

Almost surely, 2^398893633876 is an apocalyptic number.

It is an amenable number.

398893633876 is a deficient number, since it is larger than the sum of its proper divisors (299170225414).

398893633876 is a wasteful number, since it uses less digits than its factorization.

398893633876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99723408473 (or 99723408471 counting only the distinct ones).

The product of its digits is 846526464, while the sum is 73.

The spelling of 398893633876 in words is "three hundred ninety-eight billion, eight hundred ninety-three million, six hundred thirty-three thousand, eight hundred seventy-six".