999968498 has 4 divisors (see below), whose sum is σ = 1499952750. Its totient is φ = 499984248.

The previous prime is 999968477. The next prime is 999968513. The reversal of 999968498 is 894869999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 978000529 + 21967969 = 31273^2 + 4687^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249992123 + ... + 249992126.

Almost surely, 2^999968498 is an apocalyptic number.

999968498 is a deficient number, since it is larger than the sum of its proper divisors (499984252).

999968498 is a wasteful number, since it uses less digits than its factorization.

999968498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499984251.

The product of its digits is 90699264, while the sum is 71.

The square root of 999968498 is about 31622.2785074068. The cubic root of 999968498 is about 999.9894992231.

The spelling of 999968498 in words is "nine hundred ninety-nine million, nine hundred sixty-eight thousand, four hundred ninety-eight".