39825490 has 8 divisors (see below), whose sum is σ = 71685900. Its totient is φ = 15930192.

The previous prime is 39825481. The next prime is 39825493. The reversal of 39825490 is 9452893.

It is a happy number.

39825490 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 2 ways, for example, as 34892649 + 4932841 = 5907^2 + 2221^2 .

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

It is not an unprimeable number, because it can be changed into a prime (39825493) 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, 1991265 + ... + 1991284.

Almost surely, 2^39825490 is an apocalyptic number.

39825490 is a deficient number, since it is larger than the sum of its proper divisors (31860410).

39825490 is a wasteful number, since it uses less digits than its factorization.

39825490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982556.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 39825490 is about 6310.7440131889. The cubic root of 39825490 is about 341.4971178070.

The spelling of 39825490 in words is "thirty-nine million, eight hundred twenty-five thousand, four hundred ninety".