39497173 has 2 divisors, whose sum is σ = 39497174. Its totient is φ = 39497172.

The previous prime is 39497147. The next prime is 39497191. The reversal of 39497173 is 37179493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34082244 + 5414929 = 5838^2 + 2327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39497173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39497113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19748586 + 19748587.

It is an arithmetic number, because the mean of its divisors is an integer number (19748587).

Almost surely, 2^39497173 is an apocalyptic number.

It is an amenable number.

39497173 is a deficient number, since it is larger than the sum of its proper divisors (1).

39497173 is an equidigital number, since it uses as much as digits as its factorization.

39497173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 39497173 is about 6284.6776369198. The cubic root of 39497173 is about 340.5561055064.

The spelling of 39497173 in words is "thirty-nine million, four hundred ninety-seven thousand, one hundred seventy-three".