39497861 has 8 divisors (see below), whose sum is σ = 42631680. Its totient is φ = 36377712.

The previous prime is 39497819. The next prime is 39497863. The reversal of 39497861 is 16879493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39497861 - 2¹⁰ = 39496837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39497863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 9398.

It is an arithmetic number, because the mean of its divisors is an integer number (5328960).

Almost surely, 2^39497861 is an apocalyptic number.

It is an amenable number.

39497861 is a deficient number, since it is larger than the sum of its proper divisors (3133819).

39497861 is a wasteful number, since it uses less digits than its factorization.

39497861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6835.

The product of its digits is 326592, while the sum is 47.

The square root of 39497861 is about 6284.7323729814. The cubic root of 39497861 is about 340.5580828736.

The spelling of 39497861 in words is "thirty-nine million, four hundred ninety-seven thousand, eight hundred sixty-one".