87669229 has 2 divisors, whose sum is σ = 87669230. Its totient is φ = 87669228.

The previous prime is 87669199. The next prime is 87669269. The reversal of 87669229 is 92296678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58216900 + 29452329 = 7630^2 + 5427^2 .

It is a cyclic number.

It is not a de Polignac number, because 87669229 - 2²¹ = 85572077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87669269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43834614 + 43834615.

It is an arithmetic number, because the mean of its divisors is an integer number (43834615).

Almost surely, 2^87669229 is an apocalyptic number.

It is an amenable number.

87669229 is a deficient number, since it is larger than the sum of its proper divisors (1).

87669229 is an equidigital number, since it uses as much as digits as its factorization.

87669229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 87669229 is about 9363.1847680156. The cubic root of 87669229 is about 444.2380243778.

The spelling of 87669229 in words is "eighty-seven million, six hundred sixty-nine thousand, two hundred twenty-nine".