16889057 has 4 divisors (see below), whose sum is σ = 17345556. Its totient is φ = 16432560.

The previous prime is 16889023. The next prime is 16889069. The reversal of 16889057 is 75098861.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7623121 + 9265936 = 2761^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 16889057 - 2⁸ = 16888801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16888999 and 16889017.

It is not an unprimeable number, because it can be changed into a prime (16889077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228194 + ... + 228267.

It is an arithmetic number, because the mean of its divisors is an integer number (4336389).

Almost surely, 2^16889057 is an apocalyptic number.

It is an amenable number.

16889057 is a deficient number, since it is larger than the sum of its proper divisors (456499).

16889057 is an equidigital number, since it uses as much as digits as its factorization.

16889057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456498.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 16889057 is about 4109.6297886793. The cubic root of 16889057 is about 256.5675933662.

The spelling of 16889057 in words is "sixteen million, eight hundred eighty-nine thousand, fifty-seven".