39474436689 has 48 divisors (see below), whose sum is σ = 60401140800. Its totient is φ = 24773309568.

The previous prime is 39474436649. The next prime is 39474436721. The reversal of 39474436689 is 98663447493.

39474436689 is a `hidden beast` number, since 394 + 74 + 43 + 66 + 89 = 666.

It is not a de Polignac number, because 39474436689 - 2⁸ = 39474436433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39474436609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20420367 + ... + 20422299.

It is an arithmetic number, because the mean of its divisors is an integer number (1258357100).

Almost surely, 2^39474436689 is an apocalyptic number.

It is an amenable number.

39474436689 is a deficient number, since it is larger than the sum of its proper divisors (20926704111).

39474436689 is a wasteful number, since it uses less digits than its factorization.

39474436689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654 (or 2651 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 63.

The spelling of 39474436689 in words is "thirty-nine billion, four hundred seventy-four million, four hundred thirty-six thousand, six hundred eighty-nine".