39689290 has 16 divisors (see below), whose sum is σ = 75201120. Its totient is φ = 15040080.

The previous prime is 39689261. The next prime is 39689303. The reversal of 39689290 is 9298693.

It is a happy number.

39689290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 39689290.

It is an unprimeable number.

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, 104256 + ... + 104635.

It is an arithmetic number, because the mean of its divisors is an integer number (4700070).

Almost surely, 2^39689290 is an apocalyptic number.

39689290 is a deficient number, since it is larger than the sum of its proper divisors (35511830).

39689290 is a wasteful number, since it uses less digits than its factorization.

39689290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208917.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 39689290 is about 6299.9436505416. The cubic root of 39689290 is about 341.1073755359.

The spelling of 39689290 in words is "thirty-nine million, six hundred eighty-nine thousand, two hundred ninety".