39985895 has 8 divisors (see below), whose sum is σ = 48185280. Its totient is φ = 31853920.

The previous prime is 39985871. The next prime is 39985951. The reversal of 39985895 is 59858993.

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

It is not a de Polignac number, because 39985895 - 2⁸ = 39985639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39985895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15536 + ... + 17925.

It is an arithmetic number, because the mean of its divisors is an integer number (6023160).

Almost surely, 2^39985895 is an apocalyptic number.

39985895 is a deficient number, since it is larger than the sum of its proper divisors (8199385).

39985895 is a wasteful number, since it uses less digits than its factorization.

39985895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33705.

The product of its digits is 3499200, while the sum is 56.

The square root of 39985895 is about 6323.4401238566. The cubic root of 39985895 is about 341.9549859248.

The spelling of 39985895 in words is "thirty-nine million, nine hundred eighty-five thousand, eight hundred ninety-five".