88409090709 has 16 divisors (see below), whose sum is σ = 130994178240. Its totient is φ = 58931407440.

The previous prime is 88409090669. The next prime is 88409090711. The reversal of 88409090709 is 90709090488.

88409090709 is a `hidden beast` number, since 88 + 409 + 0 + 90 + 70 + 9 = 666.

It is not a de Polignac number, because 88409090709 - 2²¹ = 88406993557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88409090909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15402 + ... + 420779.

It is an arithmetic number, because the mean of its divisors is an integer number (8187136140).

Almost surely, 2^88409090709 is an apocalyptic number.

It is an amenable number.

88409090709 is a deficient number, since it is larger than the sum of its proper divisors (42585087531).

88409090709 is a wasteful number, since it uses less digits than its factorization.

88409090709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443697 (or 443691 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 88409090709 in words is "eighty-eight billion, four hundred nine million, ninety thousand, seven hundred nine".