3949979780403 has 12 divisors (see below), whose sum is σ = 5705655380568. Its totient is φ = 2633260300800.

The previous prime is 3949979780401. The next prime is 3949979780423. The reversal of 3949979780403 is 3040879799493.

It is a happy number.

3949979780403 is a `hidden beast` number, since 3 + 9 + 49 + 97 + 97 + 8 + 0 + 403 = 666.

3949979780403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3949979780403 - 2¹ = 3949979780401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3949979780401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4540773 + ... + 5340278.

It is an arithmetic number, because the mean of its divisors is an integer number (475471281714).

Almost surely, 2^{3949979780403} is an apocalyptic number.

3949979780403 is a deficient number, since it is larger than the sum of its proper divisors (1755675600165).

3949979780403 is a wasteful number, since it uses less digits than its factorization.

3949979780403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9925474 (or 9925471 counting only the distinct ones).

The product of its (nonzero) digits is 370355328, while the sum is 72.

The spelling of 3949979780403 in words is "three trillion, nine hundred forty-nine billion, nine hundred seventy-nine million, seven hundred eighty thousand, four hundred three".