39919340 has 12 divisors (see below), whose sum is σ = 83830656. Its totient is φ = 15967728.

The previous prime is 39919307. The next prime is 39919379. The reversal of 39919340 is 4391993.

39919340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39919294 and 39919303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997964 + ... + 998003.

It is an arithmetic number, because the mean of its divisors is an integer number (6985888).

Almost surely, 2^39919340 is an apocalyptic number.

It is an amenable number.

39919340 is an abundant number, since it is smaller than the sum of its proper divisors (43911316).

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

39919340 is a wasteful number, since it uses less digits than its factorization.

39919340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995976 (or 1995974 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 39919340 is about 6318.1753695193. The cubic root of 39919340 is about 341.7651568794.

It can be divided in two parts, 3991 and 9340, that added together give a palindrome (13331).

The spelling of 39919340 in words is "thirty-nine million, nine hundred nineteen thousand, three hundred forty".