88649009 has 4 divisors (see below), whose sum is σ = 88834560. Its totient is φ = 88463460.

The previous prime is 88648997. The next prime is 88649047. The reversal of 88649009 is 90094688.

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 a cyclic number.

It is not a de Polignac number, because 88649009 - 2⁴ = 88648993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88649069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92057 + ... + 93014.

It is an arithmetic number, because the mean of its divisors is an integer number (22208640).

Almost surely, 2^88649009 is an apocalyptic number.

It is an amenable number.

88649009 is a deficient number, since it is larger than the sum of its proper divisors (185551).

88649009 is a wasteful number, since it uses less digits than its factorization.

88649009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185550.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 88649009 is about 9415.3602692621. The cubic root of 88649009 is about 445.8868129594.

The spelling of 88649009 in words is "eighty-eight million, six hundred forty-nine thousand, nine".