2440402213 has 4 divisors (see below), whose sum is σ = 2443154400. Its totient is φ = 2437650028.

The previous prime is 2440402201. The next prime is 2440402219. The reversal of 2440402213 is 3122040442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2440402213 - 2⁹ = 2440401701 is a prime.

It is a super-2 number, since 2×2440402213² = 11911125922430594738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440402219) 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, 1374763 + ... + 1376536.

It is an arithmetic number, because the mean of its divisors is an integer number (610788600).

Almost surely, 2^2440402213 is an apocalyptic number.

It is an amenable number.

2440402213 is a deficient number, since it is larger than the sum of its proper divisors (2752187).

2440402213 is an equidigital number, since it uses as much as digits as its factorization.

2440402213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752186.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2440402213 is about 49400.4272552374. The cubic root of 2440402213 is about 1346.3370686839.

Adding to 2440402213 its reverse (3122040442), we get a palindrome (5562442655).

The spelling of 2440402213 in words is "two billion, four hundred forty million, four hundred two thousand, two hundred thirteen".