39797247 has 16 divisors (see below), whose sum is σ = 60797952. Its totient is φ = 22683360.

The previous prime is 39797213. The next prime is 39797279. The reversal of 39797247 is 74279793.

It is a happy number.

It is not a de Polignac number, because 39797247 - 2¹⁰ = 39796223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39797196 and 39797205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39797207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6853 + ... + 11249.

It is an arithmetic number, because the mean of its divisors is an integer number (3799872).

Almost surely, 2^39797247 is an apocalyptic number.

39797247 is a deficient number, since it is larger than the sum of its proper divisors (21000705).

39797247 is a wasteful number, since it uses less digits than its factorization.

39797247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838.

The product of its digits is 666792, while the sum is 48.

The square root of 39797247 is about 6308.5059245435. The cubic root of 39797247 is about 341.4163723351.

The spelling of 39797247 in words is "thirty-nine million, seven hundred ninety-seven thousand, two hundred forty-seven".