3947754948499 has 4 divisors (see below), whose sum is σ = 3947763561336. Its totient is φ = 3947746335664.

The previous prime is 3947754948421. The next prime is 3947754948611. The reversal of 3947754948499 is 9948494577493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3947754948499 - 2²¹ = 3947752851347 is a prime.

It is a super-3 number, since 3×3947754948499³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3947754948409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3577789 + ... + 4549294.

It is an arithmetic number, because the mean of its divisors is an integer number (986940890334).

Almost surely, 2^{3947754948499} is an apocalyptic number.

3947754948499 is a deficient number, since it is larger than the sum of its proper divisors (8612837).

3947754948499 is an equidigital number, since it uses as much as digits as its factorization.

3947754948499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8612836.

The product of its digits is 9876142080, while the sum is 82.

The spelling of 3947754948499 in words is "three trillion, nine hundred forty-seven billion, seven hundred fifty-four million, nine hundred forty-eight thousand, four hundred ninety-nine".