39244247 has 6 divisors (see below), whose sum is σ = 45651528. Its totient is φ = 33637884.

The previous prime is 39244243. The next prime is 39244273. The reversal of 39244247 is 74244293.

It is not a de Polignac number, because 39244247 - 2² = 39244243 is a prime.

It is a super-2 number, since 2×39244247² = 3080221845194018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39244243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400403 + ... + 400500.

It is an arithmetic number, because the mean of its divisors is an integer number (7608588).

Almost surely, 2^39244247 is an apocalyptic number.

39244247 is a deficient number, since it is larger than the sum of its proper divisors (6407281).

39244247 is an equidigital number, since it uses as much as digits as its factorization.

39244247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800917 (or 800910 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 39244247 is about 6264.5228868606. The cubic root of 39244247 is about 339.8276144579.

The spelling of 39244247 in words is "thirty-nine million, two hundred forty-four thousand, two hundred forty-seven".