40272665 has 4 divisors (see below), whose sum is σ = 48327204. Its totient is φ = 32218128.

The previous prime is 40272653. The next prime is 40272697. The reversal of 40272665 is 56627204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32024281 + 8248384 = 5659^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 40272665 - 2⁶ = 40272601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4027262 + ... + 4027271.

It is an arithmetic number, because the mean of its divisors is an integer number (12081801).

Almost surely, 2^40272665 is an apocalyptic number.

It is an amenable number.

40272665 is a deficient number, since it is larger than the sum of its proper divisors (8054539).

40272665 is an equidigital number, since it uses as much as digits as its factorization.

40272665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054538.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 40272665 is about 6346.0747710691. The cubic root of 40272665 is about 342.7705146135.

Adding to 40272665 its reverse (56627204), we get a palindrome (96899869).

The spelling of 40272665 in words is "forty million, two hundred seventy-two thousand, six hundred sixty-five".