40096809 has 8 divisors (see below), whose sum is σ = 59402720. Its totient is φ = 26731188.

The previous prime is 40096801. The next prime is 40096817. The reversal of 40096809 is 90869004.

It is an interprime number because it is at equal distance from previous prime (40096801) and next prime (40096817).

It is not a de Polignac number, because 40096809 - 2³ = 40096801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40096801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742507 + ... + 742560.

It is an arithmetic number, because the mean of its divisors is an integer number (7425340).

Almost surely, 2^40096809 is an apocalyptic number.

It is an amenable number.

40096809 is a deficient number, since it is larger than the sum of its proper divisors (19305911).

40096809 is a wasteful number, since it uses less digits than its factorization.

40096809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485076 (or 1485070 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 40096809 is about 6332.2041186304. The cubic root of 40096809 is about 342.2708688217.

The spelling of 40096809 in words is "forty million, ninety-six thousand, eight hundred nine".