39450247 has 2 divisors, whose sum is σ = 39450248. Its totient is φ = 39450246.

The previous prime is 39450233. The next prime is 39450317. The reversal of 39450247 is 74205493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39450247 - 2⁷ = 39450119 is a prime.

It is a super-2 number, since 2×39450247² = 3112643976722018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39450947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19725123 + 19725124.

It is an arithmetic number, because the mean of its divisors is an integer number (19725124).

Almost surely, 2^39450247 is an apocalyptic number.

39450247 is a deficient number, since it is larger than the sum of its proper divisors (1).

39450247 is an equidigital number, since it uses as much as digits as its factorization.

39450247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 39450247 is about 6280.9431616597. The cubic root of 39450247 is about 340.4211821885.

The spelling of 39450247 in words is "thirty-nine million, four hundred fifty thousand, two hundred forty-seven".