8408711978949 has 16 divisors (see below), whose sum is σ = 11713057326720. Its totient is φ = 5358915105600.

The previous prime is 8408711978941. The next prime is 8408711979043. The reversal of 8408711978949 is 9498791178048.

It is not a de Polignac number, because 8408711978949 - 2³ = 8408711978941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8408711978941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478465777 + ... + 478483350.

It is an arithmetic number, because the mean of its divisors is an integer number (732066082920).

Almost surely, 2^{8408711978949} is an apocalyptic number.

It is an amenable number.

8408711978949 is a deficient number, since it is larger than the sum of its proper divisors (3304345347771).

8408711978949 is a wasteful number, since it uses less digits than its factorization.

8408711978949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956949260.

The product of its (nonzero) digits is 292626432, while the sum is 75.

The spelling of 8408711978949 in words is "eight trillion, four hundred eight billion, seven hundred eleven million, nine hundred seventy-eight thousand, nine hundred forty-nine".