39900072 has 16 divisors (see below), whose sum is σ = 99750240. Its totient is φ = 13300016.

The previous prime is 39900059. The next prime is 39900073. The reversal of 39900072 is 27000993.

It is not an unprimeable number, because it can be changed into a prime (39900073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 831228 + ... + 831275.

It is an arithmetic number, because the mean of its divisors is an integer number (6234390).

Almost surely, 2^39900072 is an apocalyptic number.

It is an amenable number.

39900072 is an abundant number, since it is smaller than the sum of its proper divisors (59850168).

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

39900072 is a wasteful number, since it uses less digits than its factorization.

39900072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662512 (or 1662508 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 39900072 is about 6316.6503781672. The cubic root of 39900072 is about 341.7101610569.

The spelling of 39900072 in words is "thirty-nine million, nine hundred thousand, seventy-two".