87344909 has 8 divisors (see below), whose sum is σ = 88154520. Its totient is φ = 86538816.

The previous prime is 87344903. The next prime is 87344921. The reversal of 87344909 is 90944378.

It can be written as a sum of positive squares in 4 ways, for example, as 43850884 + 43494025 = 6622^2 + 6595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87344909 is a prime.

It is a super-3 number, since 3×87344909³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87344909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87344903) 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 in 7 ways as a sum of consecutive naturals, for example, 79367 + ... + 80459.

It is an arithmetic number, because the mean of its divisors is an integer number (11019315).

Almost surely, 2^87344909 is an apocalyptic number.

It is an amenable number.

87344909 is a deficient number, since it is larger than the sum of its proper divisors (809611).

87344909 is a wasteful number, since it uses less digits than its factorization.

87344909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 87344909 is about 9345.8498275973. The cubic root of 87344909 is about 443.6895487579.

The spelling of 87344909 in words is "eighty-seven million, three hundred forty-four thousand, nine hundred nine".