3993061493 has 4 divisors (see below), whose sum is σ = 3997445568. Its totient is φ = 3988677420.

The previous prime is 3993061481. The next prime is 3993061543. The reversal of 3993061493 is 3941603993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3993061493 - 2¹⁶ = 3992995957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993063493) 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, 2190671 + ... + 2192492.

It is an arithmetic number, because the mean of its divisors is an integer number (999361392).

Almost surely, 2^3993061493 is an apocalyptic number.

It is an amenable number.

3993061493 is a deficient number, since it is larger than the sum of its proper divisors (4384075).

3993061493 is an equidigital number, since it uses as much as digits as its factorization.

3993061493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384074.

The product of its (nonzero) digits is 472392, while the sum is 47.

The square root of 3993061493 is about 63190.6756808313. The cubic root of 3993061493 is about 1586.4826713049.

The spelling of 3993061493 in words is "three billion, nine hundred ninety-three million, sixty-one thousand, four hundred ninety-three".