40144229 has 2 divisors, whose sum is σ = 40144230. Its totient is φ = 40144228.

The previous prime is 40144183. The next prime is 40144301. The reversal of 40144229 is 92244104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39715204 + 429025 = 6302^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144229 - 2¹⁶ = 40078693 is a prime.

It is a super-2 number, since 2×40144229² = 3223118244008882, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2441915 and since 40144229 and 2441915 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 40144198 and 40144207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40144529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072114 + 20072115.

It is an arithmetic number, because the mean of its divisors is an integer number (20072115).

Almost surely, 2^40144229 is an apocalyptic number.

It is an amenable number.

40144229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144229 is an equidigital number, since it uses as much as digits as its factorization.

40144229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40144229 is about 6335.9473640490. The cubic root of 40144229 is about 342.4057431500.

The spelling of 40144229 in words is "forty million, one hundred forty-four thousand, two hundred twenty-nine".