39807045 has 56 divisors (see below), whose sum is σ = 73134816. Its totient is φ = 20785248.

The previous prime is 39807041. The next prime is 39807059. The reversal of 39807045 is 54070893.

39807045 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 39807045 - 2² = 39807041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39807041) 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 55 ways as a sum of consecutive naturals, for example, 244134 + ... + 244296.

Almost surely, 2^39807045 is an apocalyptic number.

It is an amenable number.

39807045 is a deficient number, since it is larger than the sum of its proper divisors (33327771).

39807045 is an equidigital number, since it uses as much as digits as its factorization.

39807045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 39807045 is about 6309.2824473152. The cubic root of 39807045 is about 341.4443887045. Note that the first 3 decimals are identical.

It can be divided in two parts, 3980 and 7045, that added together give a square (11025 = 105²).

The spelling of 39807045 in words is "thirty-nine million, eight hundred seven thousand, forty-five".