39999885 has 8 divisors (see below), whose sum is σ = 63999840. Its totient is φ = 21333264.

The previous prime is 39999863. The next prime is 39999899. The reversal of 39999885 is 58899993.

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

It is not a de Polignac number, because 39999885 - 2⁶ = 39999821 is a prime.

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, 1333315 + ... + 1333344.

It is an arithmetic number, because the mean of its divisors is an integer number (7999980).

Almost surely, 2^39999885 is an apocalyptic number.

It is an amenable number.

39999885 is a deficient number, since it is larger than the sum of its proper divisors (23999955).

39999885 is a wasteful number, since it uses less digits than its factorization.

39999885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666667.

The product of its digits is 6298560, while the sum is 60.

The square root of 39999885 is about 6324.5462287820. The cubic root of 39999885 is about 341.9948615896.

It can be divided in two parts, 3999988 and 5, that added together give a palindrome (3999993).

The spelling of 39999885 in words is "thirty-nine million, nine hundred ninety-nine thousand, eight hundred eighty-five".