990593679994 has 8 divisors (see below), whose sum is σ = 1526049723348. Its totient is φ = 481910438880.

The previous prime is 990593679937. The next prime is 990593679997. The reversal of 990593679994 is 499976395099.

It can be written as a sum of positive squares in 2 ways, for example, as 897026823225 + 93566856769 = 947115^2 + 305887^2 .

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

It is not an unprimeable number, because it can be changed into a prime (990593679997) 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, 6693200467 + ... + 6693200614.

Almost surely, 2^990593679994 is an apocalyptic number.

990593679994 is a deficient number, since it is larger than the sum of its proper divisors (535456043354).

990593679994 is a wasteful number, since it uses less digits than its factorization.

990593679994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13386401120.

The product of its (nonzero) digits is 1339231320, while the sum is 79.

The spelling of 990593679994 in words is "nine hundred ninety billion, five hundred ninety-three million, six hundred seventy-nine thousand, nine hundred ninety-four".