16919477 has 2 divisors, whose sum is σ = 16919478. Its totient is φ = 16919476.

The previous prime is 16919473. The next prime is 16919503. The reversal of 16919477 is 77491961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10699441 + 6220036 = 3271^2 + 2494^2 .

It is an emirp because it is prime and its reverse (77491961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16919477 - 2² = 16919473 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16919473) 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, 8459738 + 8459739.

It is an arithmetic number, because the mean of its divisors is an integer number (8459739).

Almost surely, 2^16919477 is an apocalyptic number.

It is an amenable number.

16919477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16919477 is an equidigital number, since it uses as much as digits as its factorization.

16919477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 16919477 is about 4113.3291869239. The cubic root of 16919477 is about 256.7215412740.

The spelling of 16919477 in words is "sixteen million, nine hundred nineteen thousand, four hundred seventy-seven".