39999149 has 8 divisors (see below), whose sum is σ = 42388920. Its totient is φ = 37676800.

The previous prime is 39999143. The next prime is 39999163. The reversal of 39999149 is 94199993.

39999149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3396649 + 36602500 = 1843^2 + 6050^2 .

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

It is not a de Polignac number, because 39999149 - 2⁴ = 39999133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39999149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39999143) 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 7 ways as a sum of consecutive naturals, for example, 15632 + ... + 18009.

It is an arithmetic number, because the mean of its divisors is an integer number (5298615).

Almost surely, 2^39999149 is an apocalyptic number.

It is an amenable number.

39999149 is a deficient number, since it is larger than the sum of its proper divisors (2389771).

39999149 is a wasteful number, since it uses less digits than its factorization.

39999149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33711.

The product of its digits is 708588, while the sum is 53.

The square root of 39999149 is about 6324.4880425217. The cubic root of 39999149 is about 341.9927640023.

The spelling of 39999149 in words is "thirty-nine million, nine hundred ninety-nine thousand, one hundred forty-nine".