16913977 has 2 divisors, whose sum is σ = 16913978. Its totient is φ = 16913976.

The previous prime is 16913951. The next prime is 16914041. The reversal of 16913977 is 77931961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14318656 + 2595321 = 3784^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 16913977 - 2¹⁹ = 16389689 is a prime.

It is not a weakly prime, because it can be changed into another prime (16913917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8456988 + 8456989.

It is an arithmetic number, because the mean of its divisors is an integer number (8456989).

Almost surely, 2^16913977 is an apocalyptic number.

It is an amenable number.

16913977 is a deficient number, since it is larger than the sum of its proper divisors (1).

16913977 is an equidigital number, since it uses as much as digits as its factorization.

16913977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 43.

The square root of 16913977 is about 4112.6605743728. The cubic root of 16913977 is about 256.6937208416.

The spelling of 16913977 in words is "sixteen million, nine hundred thirteen thousand, nine hundred seventy-seven".