87344669 has 2 divisors, whose sum is σ = 87344670. Its totient is φ = 87344668.

The previous prime is 87344633. The next prime is 87344683. The reversal of 87344669 is 96644378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48469444 + 38875225 = 6962^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 87344669 - 2¹² = 87340573 is a prime.

It is a super-2 number, since 2×87344669² = 15258182405439122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87344069) 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, 43672334 + 43672335.

It is an arithmetic number, because the mean of its divisors is an integer number (43672335).

Almost surely, 2^87344669 is an apocalyptic number.

It is an amenable number.

87344669 is a deficient number, since it is larger than the sum of its proper divisors (1).

87344669 is an equidigital number, since it uses as much as digits as its factorization.

87344669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The square root of 87344669 is about 9345.8369876646. The cubic root of 87344669 is about 443.6891423782.

The spelling of 87344669 in words is "eighty-seven million, three hundred forty-four thousand, six hundred sixty-nine".