39908445 has 16 divisors (see below), whose sum is σ = 64012032. Its totient is φ = 21231680.

The previous prime is 39908413. The next prime is 39908447. The reversal of 39908445 is 54480993.

39908445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39908445 - 2⁵ = 39908413 is a prime.

It is a super-3 number, since 3×39908445³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39908397 and 39908406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39908447) 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 15 ways as a sum of consecutive naturals, for example, 3379 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (4000752).

Almost surely, 2^39908445 is an apocalyptic number.

It is an amenable number.

39908445 is a deficient number, since it is larger than the sum of its proper divisors (24103587).

39908445 is a wasteful number, since it uses less digits than its factorization.

39908445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 39908445 is about 6317.3131155579. The cubic root of 39908445 is about 341.7340619249.

The spelling of 39908445 in words is "thirty-nine million, nine hundred eight thousand, four hundred forty-five".