16892989 has 2 divisors, whose sum is σ = 16892990. Its totient is φ = 16892988.

The previous prime is 16892983. The next prime is 16892999. The reversal of 16892989 is 98929861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12545764 + 4347225 = 3542^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 16892989 - 2¹⁹ = 16368701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16892983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8446494 + 8446495.

It is an arithmetic number, because the mean of its divisors is an integer number (8446495).

Almost surely, 2^16892989 is an apocalyptic number.

It is an amenable number.

16892989 is a deficient number, since it is larger than the sum of its proper divisors (1).

16892989 is an equidigital number, since it uses as much as digits as its factorization.

16892989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 52.

The square root of 16892989 is about 4110.1081494287. The cubic root of 16892989 is about 256.5875026187.

The spelling of 16892989 in words is "sixteen million, eight hundred ninety-two thousand, nine hundred eighty-nine".