19434998 has 8 divisors (see below), whose sum is σ = 31802760. Its totient is φ = 8834080.

The previous prime is 19434997. The next prime is 19435021. The reversal of 19434998 is 89943491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19434997) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 441683 + ... + 441726.

It is an arithmetic number, because the mean of its divisors is an integer number (3975345).

Almost surely, 2^19434998 is an apocalyptic number.

19434998 is a deficient number, since it is larger than the sum of its proper divisors (12367762).

19434998 is a wasteful number, since it uses less digits than its factorization.

19434998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883422.

The product of its digits is 279936, while the sum is 47.

The square root of 19434998 is about 4408.5142621976. The cubic root of 19434998 is about 268.8612211006.

The spelling of 19434998 in words is "nineteen million, four hundred thirty-four thousand, nine hundred ninety-eight".