88407809 has 12 divisors (see below), whose sum is σ = 103540500. Its totient is φ = 75263328.

The previous prime is 88407797. The next prime is 88407827. The reversal of 88407809 is 90870488.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57047809 + 31360000 = 7553^2 + 5600^2 .

It is not a de Polignac number, because 88407809 - 2⁴ = 88407793 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 88407809.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88407859) 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 11 ways as a sum of consecutive naturals, for example, 1247 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (8628375).

Almost surely, 2^88407809 is an apocalyptic number.

It is an amenable number.

88407809 is a deficient number, since it is larger than the sum of its proper divisors (15132691).

88407809 is a wasteful number, since it uses less digits than its factorization.

88407809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272 (or 12265 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 88407809 is about 9402.5426880180. The cubic root of 88407809 is about 445.4820496932.

The spelling of 88407809 in words is "eighty-eight million, four hundred seven thousand, eight hundred nine".