39935602906 has 4 divisors (see below), whose sum is σ = 59903404362. Its totient is φ = 19967801452.

The previous prime is 39935602897. The next prime is 39935602957. The reversal of 39935602906 is 60920653993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60920653993 = 43499 ⋅1400507.

It can be written as a sum of positive squares in only one way, i.e., 36674165025 + 3261437881 = 191505^2 + 57109^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9983900725 + ... + 9983900728.

Almost surely, 2^39935602906 is an apocalyptic number.

39935602906 is a deficient number, since it is larger than the sum of its proper divisors (19967801456).

39935602906 is a wasteful number, since it uses less digits than its factorization.

39935602906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19967801455.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The spelling of 39935602906 in words is "thirty-nine billion, nine hundred thirty-five million, six hundred two thousand, nine hundred six".