16087769 has 2 divisors, whose sum is σ = 16087770. Its totient is φ = 16087768.

The previous prime is 16087759. The next prime is 16087777. The reversal of 16087769 is 96778061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9223369 + 6864400 = 3037^2 + 2620^2 .

It is an emirp because it is prime and its reverse (96778061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16087769 is a prime.

It is a super-2 number, since 2×16087769² = 517632622794722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16087759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8043884 + 8043885.

It is an arithmetic number, because the mean of its divisors is an integer number (8043885).

Almost surely, 2^16087769 is an apocalyptic number.

It is an amenable number.

16087769 is a deficient number, since it is larger than the sum of its proper divisors (1).

16087769 is an equidigital number, since it uses as much as digits as its factorization.

16087769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 16087769 is about 4010.9561204281. The cubic root of 16087769 is about 252.4441284085. Note that the first 3 decimals are identical.

The spelling of 16087769 in words is "sixteen million, eighty-seven thousand, seven hundred sixty-nine".