40245229 has 2 divisors, whose sum is σ = 40245230. Its totient is φ = 40245228.

The previous prime is 40245197. The next prime is 40245251. The reversal of 40245229 is 92254204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30228004 + 10017225 = 5498^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 40245229 - 2⁵ = 40245197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40245197 and 40245206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40245259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122614 + 20122615.

It is an arithmetic number, because the mean of its divisors is an integer number (20122615).

Almost surely, 2^40245229 is an apocalyptic number.

It is an amenable number.

40245229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40245229 is an equidigital number, since it uses as much as digits as its factorization.

40245229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40245229 is about 6343.9127516069. The cubic root of 40245229 is about 342.6926587592.

The spelling of 40245229 in words is "forty million, two hundred forty-five thousand, two hundred twenty-nine".