16387669 has 2 divisors, whose sum is σ = 16387670. Its totient is φ = 16387668.

The previous prime is 16387649. The next prime is 16387691. The reversal of 16387669 is 96678361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14152644 + 2235025 = 3762^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 16387669 - 2¹³ = 16379477 is a prime.

It is a super-2 number, since 2×16387669² = 537111390507122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16387649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8193834 + 8193835.

It is an arithmetic number, because the mean of its divisors is an integer number (8193835).

Almost surely, 2^16387669 is an apocalyptic number.

It is an amenable number.

16387669 is a deficient number, since it is larger than the sum of its proper divisors (1).

16387669 is an equidigital number, since it uses as much as digits as its factorization.

16387669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 16387669 is about 4048.1685982676. The cubic root of 16387669 is about 254.0031258011.

It can be divided in two parts, 16387 and 669, that multiplied together give a triangular number (10962903 = T₄₆₈₂).

The spelling of 16387669 in words is "sixteen million, three hundred eighty-seven thousand, six hundred sixty-nine".