40344229 has 2 divisors, whose sum is σ = 40344230. Its totient is φ = 40344228.

The previous prime is 40344223. The next prime is 40344257. The reversal of 40344229 is 92244304.

It is an a-pointer prime, because the next prime (40344257) can be obtained adding 40344229 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 4941729 = 5950^2 + 2223^2 .

It is a cyclic number.

It is not a de Polignac number, because 40344229 - 2¹⁵ = 40311461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40344197 and 40344206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40344223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20172114 + 20172115.

It is an arithmetic number, because the mean of its divisors is an integer number (20172115).

Almost surely, 2^40344229 is an apocalyptic number.

It is an amenable number.

40344229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40344229 is an equidigital number, since it uses as much as digits as its factorization.

40344229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40344229 is about 6351.7107144454. The cubic root of 40344229 is about 342.9734273799.

The spelling of 40344229 in words is "forty million, three hundred forty-four thousand, two hundred twenty-nine".