40344213229 has 4 divisors (see below), whose sum is σ = 40344801084. Its totient is φ = 40343625376.

The previous prime is 40344213199. The next prime is 40344213251. The reversal of 40344213229 is 92231244304.

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 2833432900 + 37510780329 = 53230^2 + 193677^2 .

It is a cyclic number.

It is not a de Polignac number, because 40344213229 - 2⁹ = 40344212717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40344213194 and 40344213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344213269) 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, 174922 + ... + 333595.

It is an arithmetic number, because the mean of its divisors is an integer number (10086200271).

Almost surely, 2^40344213229 is an apocalyptic number.

It is an amenable number.

40344213229 is a deficient number, since it is larger than the sum of its proper divisors (587855).

40344213229 is an equidigital number, since it uses as much as digits as its factorization.

40344213229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587854.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 40344213229 in words is "forty billion, three hundred forty-four million, two hundred thirteen thousand, two hundred twenty-nine".