3993780749 has 8 divisors (see below), whose sum is σ = 4615606080. Its totient is φ = 3384776736.

The previous prime is 3993780719. The next prime is 3993780787. The reversal of 3993780749 is 9470873993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3993780749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993780719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3204659 + ... + 3205904.

It is an arithmetic number, because the mean of its divisors is an integer number (576950760).

Almost surely, 2^3993780749 is an apocalyptic number.

It is an amenable number.

3993780749 is a deficient number, since it is larger than the sum of its proper divisors (621825331).

3993780749 is an equidigital number, since it uses as much as digits as its factorization.

3993780749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410659.

The product of its (nonzero) digits is 10287648, while the sum is 59.

The square root of 3993780749 is about 63196.3665806825. The cubic root of 3993780749 is about 1586.5779214177.

The spelling of 3993780749 in words is "three billion, nine hundred ninety-three million, seven hundred eighty thousand, seven hundred forty-nine".