3978535473 has 24 divisors (see below), whose sum is σ = 6371990976. Its totient is φ = 2371701600.

The previous prime is 3978535441. The next prime is 3978535487. The reversal of 3978535473 is 3745358793.

3978535473 is a `hidden beast` number, since 3 + 97 + 8 + 5 + 3 + 547 + 3 = 666.

It is not a de Polignac number, because 3978535473 - 2⁵ = 3978535441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3978535403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323365 + ... + 335442.

It is an arithmetic number, because the mean of its divisors is an integer number (265499624).

Almost surely, 2^3978535473 is an apocalyptic number.

3978535473 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3978535473 is a deficient number, since it is larger than the sum of its proper divisors (2393455503).

3978535473 is a wasteful number, since it uses less digits than its factorization.

3978535473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658885 (or 658882 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The square root of 3978535473 is about 63075.6329575851. The cubic root of 3978535473 is about 1584.5565568444.

The spelling of 3978535473 in words is "three billion, nine hundred seventy-eight million, five hundred thirty-five thousand, four hundred seventy-three".