8039749655 has 16 divisors (see below), whose sum is σ = 11294869824. Its totient is φ = 5378507520.

The previous prime is 8039749643. The next prime is 8039749687. The reversal of 8039749655 is 5569479308.

It is a happy number.

It is not a de Polignac number, because 8039749655 - 2¹² = 8039745559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8039749655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2799872 + ... + 2802741.

It is an arithmetic number, because the mean of its divisors is an integer number (705929364).

Almost surely, 2^8039749655 is an apocalyptic number.

8039749655 is a deficient number, since it is larger than the sum of its proper divisors (3255120169).

8039749655 is a wasteful number, since it uses less digits than its factorization.

8039749655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602666.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 8039749655 is about 89664.6510894901. The cubic root of 8039749655 is about 2003.3070001113.

The spelling of 8039749655 in words is "eight billion, thirty-nine million, seven hundred forty-nine thousand, six hundred fifty-five".