16977769 has 2 divisors, whose sum is σ = 16977770. Its totient is φ = 16977768.

The previous prime is 16977767. The next prime is 16977791. The reversal of 16977769 is 96777961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15896169 + 1081600 = 3987^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 16977769 - 2¹ = 16977767 is a prime.

It is a super-2 number, since 2×16977769² = 576489280434722, which contains 22 as substring.

Together with 16977767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16977761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8488884 + 8488885.

It is an arithmetic number, because the mean of its divisors is an integer number (8488885).

Almost surely, 2^16977769 is an apocalyptic number.

It is an amenable number.

16977769 is a deficient number, since it is larger than the sum of its proper divisors (1).

16977769 is an equidigital number, since it uses as much as digits as its factorization.

16977769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 52.

The square root of 16977769 is about 4120.4088389382. The cubic root of 16977769 is about 257.0160275045.

The spelling of 16977769 in words is "sixteen million, nine hundred seventy-seven thousand, seven hundred sixty-nine".