40220365 has 4 divisors (see below), whose sum is σ = 48264444. Its totient is φ = 32176288.

The previous prime is 40220329. The next prime is 40220381. The reversal of 40220365 is 56302204.

It is a happy number.

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 4052169 + 36168196 = 2013^2 + 6014^2 .

It is a cyclic number.

It is not a de Polignac number, because 40220365 - 2⁹ = 40219853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022032 + ... + 4022041.

It is an arithmetic number, because the mean of its divisors is an integer number (12066111).

Almost surely, 2^40220365 is an apocalyptic number.

It is an amenable number.

40220365 is a deficient number, since it is larger than the sum of its proper divisors (8044079).

40220365 is an equidigital number, since it uses as much as digits as its factorization.

40220365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044078.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40220365 is about 6341.9527749740. The cubic root of 40220365 is about 342.6220709669.

Adding to 40220365 its reverse (56302204), we get a palindrome (96522569).

The spelling of 40220365 in words is "forty million, two hundred twenty thousand, three hundred sixty-five".