198969964 has 12 divisors (see below), whose sum is σ = 363336624. Its totient is φ = 95159504.

The previous prime is 198969961. The next prime is 198970001. The reversal of 198969964 is 469969891.

198969964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198969964² = 79178093148322592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198969961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081267 + ... + 1081450.

It is an arithmetic number, because the mean of its divisors is an integer number (30278052).

Almost surely, 2^198969964 is an apocalyptic number.

It is an amenable number.

198969964 is a deficient number, since it is larger than the sum of its proper divisors (164366660).

198969964 is a wasteful number, since it uses less digits than its factorization.

198969964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162744 (or 2162742 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 61.

The square root of 198969964 is about 14105.6713416980. The cubic root of 198969964 is about 583.7978713452.

The spelling of 198969964 in words is "one hundred ninety-eight million, nine hundred sixty-nine thousand, nine hundred sixty-four".