39873390 has 32 divisors (see below), whose sum is σ = 97735680. Its totient is φ = 10406304.

The previous prime is 39873389. The next prime is 39873473. The reversal of 39873390 is 9337893.

It is a happy number.

39873390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 12730 + ... + 15549.

It is an arithmetic number, because the mean of its divisors is an integer number (3054240).

Almost surely, 2^39873390 is an apocalyptic number.

39873390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39873390 is an abundant number, since it is smaller than the sum of its proper divisors (57862290).

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

39873390 is a wasteful number, since it uses less digits than its factorization.

39873390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28336.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 39873390 is about 6314.5379878499. The cubic root of 39873390 is about 341.6339745308.

The spelling of 39873390 in words is "thirty-nine million, eight hundred seventy-three thousand, three hundred ninety".