693889498394 has 8 divisors (see below), whose sum is σ = 1040888209620. Its totient is φ = 346926761856.

The previous prime is 693889498373. The next prime is 693889498429. The reversal of 693889498394 is 493894988396.

It can be written as a sum of positive squares in 2 ways, for example, as 693664108225 + 225390169 = 832865^2 + 15013^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8945399 + ... + 9022634.

Almost surely, 2^693889498394 is an apocalyptic number.

693889498394 is a deficient number, since it is larger than the sum of its proper divisors (346998711226).

693889498394 is a wasteful number, since it uses less digits than its factorization.

693889498394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987344.

The product of its digits is 2902376448, while the sum is 80.

The spelling of 693889498394 in words is "six hundred ninety-three billion, eight hundred eighty-nine million, four hundred ninety-eight thousand, three hundred ninety-four".