40809097 has 8 divisors (see below), whose sum is σ = 47335616. Its totient is φ = 34456752.

The previous prime is 40809091. The next prime is 40809101. The reversal of 40809097 is 79090804.

It is a happy number.

40809097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40809097 - 2¹⁹ = 40284809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40809091) 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 7 ways as a sum of consecutive naturals, for example, 43038 + ... + 43975.

It is an arithmetic number, because the mean of its divisors is an integer number (5916952).

Almost surely, 2^40809097 is an apocalyptic number.

It is an amenable number.

40809097 is a deficient number, since it is larger than the sum of its proper divisors (6526519).

40809097 is an equidigital number, since it uses as much as digits as its factorization.

40809097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87087.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 40809097 is about 6388.1998246767. The cubic root of 40809097 is about 344.2857083088.

The spelling of 40809097 in words is "forty million, eight hundred nine thousand, ninety-seven".