3992461749547 has 4 divisors (see below), whose sum is σ = 3993543428056. Its totient is φ = 3991380071040.

The previous prime is 3992461749469. The next prime is 3992461749559. The reversal of 3992461749547 is 7459471642993.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3992461749547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3992462749547) 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, 540833718 + ... + 540841099.

It is an arithmetic number, because the mean of its divisors is an integer number (998385857014).

Almost surely, 2^{3992461749547} is an apocalyptic number.

3992461749547 is a deficient number, since it is larger than the sum of its proper divisors (1081678509).

3992461749547 is a wasteful number, since it uses less digits than its factorization.

3992461749547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081678508.

The product of its digits is 411505920, while the sum is 70.

The spelling of 3992461749547 in words is "three trillion, nine hundred ninety-two billion, four hundred sixty-one million, seven hundred forty-nine thousand, five hundred forty-seven".