39969858 has 8 divisors (see below), whose sum is σ = 79939728. Its totient is φ = 13323284.

The previous prime is 39969827. The next prime is 39969893. The reversal of 39969858 is 85896993.

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

39969858 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 39969798 and 39969807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330816 + ... + 3330827.

It is an arithmetic number, because the mean of its divisors is an integer number (9992466).

Almost surely, 2^39969858 is an apocalyptic number.

39969858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39969858 is a wasteful number, since it uses less digits than its factorization.

39969858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661648.

The product of its digits is 4199040, while the sum is 57.

The square root of 39969858 is about 6322.1719369217. The cubic root of 39969858 is about 341.9092642571.

It can be divided in two parts, 3996985 and 8, that added together give a palindrome (3996993).

The spelling of 39969858 in words is "thirty-nine million, nine hundred sixty-nine thousand, eight hundred fifty-eight".