40327897 has 4 divisors (see below), whose sum is σ = 40340916. Its totient is φ = 40314880.

The previous prime is 40327879. The next prime is 40327907. The reversal of 40327897 is 79872304.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25918281 + 14409616 = 5091^2 + 3796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40327897 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40327877) 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, 1113 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (10085229).

Almost surely, 2^40327897 is an apocalyptic number.

It is an amenable number.

40327897 is a deficient number, since it is larger than the sum of its proper divisors (13019).

40327897 is an equidigital number, since it uses as much as digits as its factorization.

40327897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 40327897 is about 6350.4249464111. The cubic root of 40327897 is about 342.9271407264.

The spelling of 40327897 in words is "forty million, three hundred twenty-seven thousand, eight hundred ninety-seven".