8040247 has 2 divisors, whose sum is σ = 8040248. Its totient is φ = 8040246.

The previous prime is 8040239. The next prime is 8040257. The reversal of 8040247 is 7420408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8040247 - 2³ = 8040239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8040217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4020123 + 4020124.

It is an arithmetic number, because the mean of its divisors is an integer number (4020124).

Almost surely, 2^8040247 is an apocalyptic number.

8040247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8040247 is an equidigital number, since it uses as much as digits as its factorization.

8040247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 8040247 is about 2835.5329305088. The cubic root of 8040247 is about 200.3348307955.

The spelling of 8040247 in words is "eight million, forty thousand, two hundred forty-seven".