198429973 has 4 divisors (see below), whose sum is σ = 226777120. Its totient is φ = 170082828.

The previous prime is 198429943. The next prime is 198429983. The reversal of 198429973 is 379924891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198429973 - 2⁹ = 198429461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198429973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198429943) 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, 14173563 + ... + 14173576.

It is an arithmetic number, because the mean of its divisors is an integer number (56694280).

Almost surely, 2^198429973 is an apocalyptic number.

It is an amenable number.

198429973 is a deficient number, since it is larger than the sum of its proper divisors (28347147).

198429973 is an equidigital number, since it uses as much as digits as its factorization.

198429973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28347146.

The product of its digits is 979776, while the sum is 52.

The square root of 198429973 is about 14086.5174191494. The cubic root of 198429973 is about 583.2692635664.

The spelling of 198429973 in words is "one hundred ninety-eight million, four hundred twenty-nine thousand, nine hundred seventy-three".