39494940 has 48 divisors (see below), whose sum is σ = 110920320. Its totient is φ = 10500160.

The previous prime is 39494929. The next prime is 39494963. The reversal of 39494940 is 4949493.

It is a junction number, because it is equal to n+sod(n) for n = 39494892 and 39494901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24355 + ... + 25925.

It is an arithmetic number, because the mean of its divisors is an integer number (2310840).

Almost surely, 2^39494940 is an apocalyptic number.

39494940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a pronic number, being equal to 6284×6285.

It is an amenable number.

39494940 is an abundant number, since it is smaller than the sum of its proper divisors (71425380).

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

39494940 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (39494939) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2002).

39494940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 39494940 is about 6284.4999801098. The cubic root of 39494940 is about 340.5496875271.

The spelling of 39494940 in words is "thirty-nine million, four hundred ninety-four thousand, nine hundred forty".