16999398 has 24 divisors (see below), whose sum is σ = 39665808. Its totient is φ = 5230512.

The previous prime is 16999393. The next prime is 16999399. The reversal of 16999398 is 89399961.

16999398 is a `hidden beast` number, since 169 + 99 + 398 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16999393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36090 + ... + 36557.

It is an arithmetic number, because the mean of its divisors is an integer number (1652742).

Almost surely, 2^16999398 is an apocalyptic number.

16999398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16999398 is an abundant number, since it is smaller than the sum of its proper divisors (22666410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16999398 is a wasteful number, since it uses less digits than its factorization.

16999398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72668 (or 72665 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 16999398 is about 4123.0326217482. The cubic root of 16999398 is about 257.1251239094.

The spelling of 16999398 in words is "sixteen million, nine hundred ninety-nine thousand, three hundred ninety-eight".