39985959 has 8 divisors (see below), whose sum is σ = 57415792. Its totient is φ = 24606720.

The previous prime is 39985951. The next prime is 39985987. The reversal of 39985959 is 95958993.

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

It is not a de Polignac number, because 39985959 - 2³ = 39985951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39985899 and 39985908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39985951) 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, 512602 + ... + 512679.

It is an arithmetic number, because the mean of its divisors is an integer number (7176974).

Almost surely, 2^39985959 is an apocalyptic number.

39985959 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

39985959 is a deficient number, since it is larger than the sum of its proper divisors (17429833).

39985959 is a wasteful number, since it uses less digits than its factorization.

39985959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025297.

The product of its digits is 3936600, while the sum is 57.

The square root of 39985959 is about 6323.4451843912. The cubic root of 39985959 is about 341.9551683651.

It can be divided in two parts, 39 and 985959, that multiplied together give a square (38452401 = 6201²).

The spelling of 39985959 in words is "thirty-nine million, nine hundred eighty-five thousand, nine hundred fifty-nine".