39954040 has 64 divisors (see below), whose sum is σ = 106076160. Its totient is φ = 13253760.

The previous prime is 39954037. The next prime is 39954067. The reversal of 39954040 is 4045993.

It is a junction number, because it is equal to n+sod(n) for n = 39953987 and 39954005.

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, 6379 + ... + 10981.

It is an arithmetic number, because the mean of its divisors is an integer number (1657440).

Almost surely, 2^39954040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39954040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53038080).

39954040 is an abundant number, since it is smaller than the sum of its proper divisors (66122120).

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

39954040 is a wasteful number, since it uses less digits than its factorization.

39954040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652 (or 4648 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 39954040 is about 6320.9208189947. The cubic root of 39954040 is about 341.8641549788.

The spelling of 39954040 in words is "thirty-nine million, nine hundred fifty-four thousand, forty".