88518409 has 4 divisors (see below), whose sum is σ = 101163904. Its totient is φ = 75872916.

The previous prime is 88518407. The next prime is 88518433. The reversal of 88518409 is 90481588.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 88518409 - 2¹ = 88518407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88518407) 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 3 ways as a sum of consecutive naturals, for example, 6322737 + ... + 6322750.

It is an arithmetic number, because the mean of its divisors is an integer number (25290976).

Almost surely, 2^88518409 is an apocalyptic number.

It is an amenable number.

88518409 is a deficient number, since it is larger than the sum of its proper divisors (12645495).

88518409 is a wasteful number, since it uses less digits than its factorization.

88518409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12645494.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 88518409 is about 9408.4222375487. The cubic root of 88518409 is about 445.6677413701.

The spelling of 88518409 in words is "eighty-eight million, five hundred eighteen thousand, four hundred nine".