39481636 has 6 divisors (see below), whose sum is σ = 69092870. Its totient is φ = 19740816.

The previous prime is 39481597. The next prime is 39481649. The reversal of 39481636 is 63618493.

It can be written as a sum of positive squares in only one way, i.e., 35046400 + 4435236 = 5920^2 + 2106^2 .

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, 4935201 + ... + 4935208.

Almost surely, 2^39481636 is an apocalyptic number.

It is an amenable number.

39481636 is a deficient number, since it is larger than the sum of its proper divisors (29611234).

39481636 is a wasteful number, since it uses less digits than its factorization.

39481636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9870413 (or 9870411 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 39481636 is about 6283.4414137477. The cubic root of 39481636 is about 340.5114448066.

It can be divided in two parts, 3948163 and 6, that added together give a square (3948169 = 1987²).

The spelling of 39481636 in words is "thirty-nine million, four hundred eighty-one thousand, six hundred thirty-six".