16899959 has 2 divisors, whose sum is σ = 16899960. Its totient is φ = 16899958.

The previous prime is 16899889. The next prime is 16899973. The reversal of 16899959 is 95999861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16899959 - 2²⁴ = 122743 is a prime.

It is a super-2 number, since 2×16899959² = 571217228403362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16899359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8449979 + 8449980.

It is an arithmetic number, because the mean of its divisors is an integer number (8449980).

Almost surely, 2^16899959 is an apocalyptic number.

16899959 is a deficient number, since it is larger than the sum of its proper divisors (1).

16899959 is an equidigital number, since it uses as much as digits as its factorization.

16899959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 56.

The square root of 16899959 is about 4110.9559715473. The cubic root of 16899959 is about 256.6227868616.

The spelling of 16899959 in words is "sixteen million, eight hundred ninety-nine thousand, nine hundred fifty-nine".