39500040 has 32 divisors (see below), whose sum is σ = 118500480. Its totient is φ = 10533312.

The previous prime is 39500029. The next prime is 39500057. The reversal of 39500040 is 4000593.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164464 + ... + 164703.

It is an arithmetic number, because the mean of its divisors is an integer number (3703140).

Almost surely, 2^39500040 is an apocalyptic number.

39500040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39500040 is an abundant number, since it is smaller than the sum of its proper divisors (79000440).

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

39500040 is a wasteful number, since it uses less digits than its factorization.

39500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329181 (or 329177 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 39500040 is about 6284.9057272166. The cubic root of 39500040 is about 340.5643453428.

The spelling of 39500040 in words is "thirty-nine million, five hundred thousand, forty".