39870004 has 6 divisors (see below), whose sum is σ = 69772514. Its totient is φ = 19935000.

The previous prime is 39869969. The next prime is 39870013. The reversal of 39870004 is 40007893.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24029604 + 15840400 = 4902^2 + 3980^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983747 + ... + 4983754.

Almost surely, 2^39870004 is an apocalyptic number.

It is an amenable number.

39870004 is a deficient number, since it is larger than the sum of its proper divisors (29902510).

39870004 is a wasteful number, since it uses less digits than its factorization.

39870004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967505 (or 9967503 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 39870004 is about 6314.2698706976. The cubic root of 39870004 is about 341.6243038759.

Adding to 39870004 its reverse (40007893), we get a palindrome (79877897).

The spelling of 39870004 in words is "thirty-nine million, eight hundred seventy thousand, four".