16899998 has 4 divisors (see below), whose sum is σ = 25350000. Its totient is φ = 8449998.

The previous prime is 16899973. The next prime is 16900021. The reversal of 16899998 is 89999861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89999861 = 7 ⋅12857123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4224998 + ... + 4225001.

It is an arithmetic number, because the mean of its divisors is an integer number (6337500).

Almost surely, 2^16899998 is an apocalyptic number.

16899998 is a deficient number, since it is larger than the sum of its proper divisors (8450002).

16899998 is an equidigital number, since it uses as much as digits as its factorization.

16899998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450001.

The product of its digits is 2519424, while the sum is 59.

The square root of 16899998 is about 4110.9607149668. The cubic root of 16899998 is about 256.6229842641.

The spelling of 16899998 in words is "sixteen million, eight hundred ninety-nine thousand, nine hundred ninety-eight".