40036247 has 2 divisors, whose sum is σ = 40036248. Its totient is φ = 40036246.

The previous prime is 40036189. The next prime is 40036289. The reversal of 40036247 is 74263004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40036247 - 2⁸ = 40035991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40030247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20018123 + 20018124.

It is an arithmetic number, because the mean of its divisors is an integer number (20018124).

Almost surely, 2^40036247 is an apocalyptic number.

40036247 is a deficient number, since it is larger than the sum of its proper divisors (1).

40036247 is an equidigital number, since it uses as much as digits as its factorization.

40036247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 40036247 is about 6327.4202484109. The cubic root of 40036247 is about 342.0984606446.

The spelling of 40036247 in words is "forty million, thirty-six thousand, two hundred forty-seven".