39897983 has 8 divisors (see below), whose sum is σ = 40765200. Its totient is φ = 39037248.

The previous prime is 39897959. The next prime is 39897989. The reversal of 39897983 is 38979893.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39897983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39897989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12035 + ... + 14987.

It is an arithmetic number, because the mean of its divisors is an integer number (5095650).

Almost surely, 2^39897983 is an apocalyptic number.

39897983 is a deficient number, since it is larger than the sum of its proper divisors (867217).

39897983 is a wasteful number, since it uses less digits than its factorization.

39897983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241.

The product of its digits is 2939328, while the sum is 56.

The square root of 39897983 is about 6316.4850193759. The cubic root of 39897983 is about 341.7041974504.

The spelling of 39897983 in words is "thirty-nine million, eight hundred ninety-seven thousand, nine hundred eighty-three".