39440125 has 8 divisors (see below), whose sum is σ = 49221432. Its totient is φ = 31552000.

The previous prime is 39440123. The next prime is 39440131. The reversal of 39440125 is 52104493.

It can be written as a sum of positive squares in 4 ways, for example, as 164836 + 39275289 = 406^2 + 6267^2 .

It is not a de Polignac number, because 39440125 - 2¹ = 39440123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39440093 and 39440102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39440123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157636 + ... + 157885.

It is an arithmetic number, because the mean of its divisors is an integer number (6152679).

Almost surely, 2^39440125 is an apocalyptic number.

It is an amenable number.

39440125 is a deficient number, since it is larger than the sum of its proper divisors (9781307).

39440125 is an equidigital number, since it uses as much as digits as its factorization.

39440125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315536 (or 315526 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 39440125 is about 6280.1373392626. The cubic root of 39440125 is about 340.3920650244.

The spelling of 39440125 in words is "thirty-nine million, four hundred forty thousand, one hundred twenty-five".