40012205 has 4 divisors (see below), whose sum is σ = 48014652. Its totient is φ = 32009760.

The previous prime is 40012201. The next prime is 40012211. The reversal of 40012205 is 50221004.

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 15697444 + 24314761 = 3962^2 + 4931^2 .

It is not a de Polignac number, because 40012205 - 2² = 40012201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012201) 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, 4001216 + ... + 4001225.

It is an arithmetic number, because the mean of its divisors is an integer number (12003663).

Almost surely, 2^40012205 is an apocalyptic number.

It is an amenable number.

40012205 is a deficient number, since it is larger than the sum of its proper divisors (8002447).

40012205 is an equidigital number, since it uses as much as digits as its factorization.

40012205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002446.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40012205 is about 6325.5201367160. The cubic root of 40012205 is about 342.0299695589.

Adding to 40012205 its reverse (50221004), we get a palindrome (90233209).

The spelling of 40012205 in words is "forty million, twelve thousand, two hundred five".