9819979413399 has 32 divisors (see below), whose sum is σ = 15404131491840. Its totient is φ = 6161458824576.

The previous prime is 9819979413337. The next prime is 9819979413437. The reversal of 9819979413399 is 9933149799189.

It is a happy number.

9819979413399 is a `hidden beast` number, since 9 + 8 + 199 + 7 + 9 + 413 + 3 + 9 + 9 = 666.

It is not a de Polignac number, because 9819979413399 - 2¹⁷ = 9819979282327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9819979413499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38956842 + ... + 39208104.

It is an arithmetic number, because the mean of its divisors is an integer number (481379109120).

Almost surely, 2^{9819979413399} is an apocalyptic number.

9819979413399 is a deficient number, since it is larger than the sum of its proper divisors (5584152078441).

9819979413399 is a wasteful number, since it uses less digits than its factorization.

9819979413399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336436 (or 336430 counting only the distinct ones).

The product of its digits is 1071385056, while the sum is 81.

The spelling of 9819979413399 in words is "nine trillion, eight hundred nineteen billion, nine hundred seventy-nine million, four hundred thirteen thousand, three hundred ninety-nine".