39989998 has 8 divisors (see below), whose sum is σ = 60032808. Its totient is φ = 19979064.

The previous prime is 39989993. The next prime is 39990011. The reversal of 39989998 is 89998993.

39989998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39989993) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4536 + ... + 10027.

It is an arithmetic number, because the mean of its divisors is an integer number (7504101).

Almost surely, 2^39989998 is an apocalyptic number.

39989998 is a deficient number, since it is larger than the sum of its proper divisors (20042810).

39989998 is a wasteful number, since it uses less digits than its factorization.

39989998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15938.

The product of its digits is 11337408, while the sum is 64.

The square root of 39989998 is about 6323.7645433713. The cubic root of 39989998 is about 341.9666816601.

The spelling of 39989998 in words is "thirty-nine million, nine hundred eighty-nine thousand, nine hundred ninety-eight".