87424309 has 16 divisors (see below), whose sum is σ = 103505920. Its totient is φ = 72258480.

The previous prime is 87424307. The next prime is 87424327. The reversal of 87424309 is 90342478.

It is a happy number.

It is not a de Polignac number, because 87424309 - 2¹ = 87424307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87424307) 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 in 15 ways as a sum of consecutive naturals, for example, 81712 + ... + 82774.

It is an arithmetic number, because the mean of its divisors is an integer number (6469120).

Almost surely, 2^87424309 is an apocalyptic number.

It is an amenable number.

87424309 is a deficient number, since it is larger than the sum of its proper divisors (16081611).

87424309 is a wasteful number, since it uses less digits than its factorization.

87424309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 87424309 is about 9350.0967374675. The cubic root of 87424309 is about 443.8239518621.

The spelling of 87424309 in words is "eighty-seven million, four hundred twenty-four thousand, three hundred nine".