619939493 has 8 divisors (see below), whose sum is σ = 684946368. Its totient is φ = 558103744.

The previous prime is 619939487. The next prime is 619939531. The reversal of 619939493 is 394939916.

619939493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 619939493 - 2¹⁰ = 619938469 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 (619939423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792371 + ... + 793152.

It is an arithmetic number, because the mean of its divisors is an integer number (85618296).

Almost surely, 2^619939493 is an apocalyptic number.

It is an amenable number.

619939493 is a deficient number, since it is larger than the sum of its proper divisors (65006875).

619939493 is a wasteful number, since it uses less digits than its factorization.

619939493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585563.

The product of its digits is 1417176, while the sum is 53.

The square root of 619939493 is about 24898.5841565339. The cubic root of 619939493 is about 852.6741584829.

The spelling of 619939493 in words is "six hundred nineteen million, nine hundred thirty-nine thousand, four hundred ninety-three".