923813986 has 4 divisors (see below), whose sum is σ = 1385720982. Its totient is φ = 461906992.

The previous prime is 923813977. The next prime is 923814007. The reversal of 923813986 is 689318329.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 904144761 + 19669225 = 30069^2 + 4435^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230953495 + ... + 230953498.

Almost surely, 2^923813986 is an apocalyptic number.

923813986 is a deficient number, since it is larger than the sum of its proper divisors (461906996).

923813986 is a wasteful number, since it uses less digits than its factorization.

923813986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461906995.

The product of its digits is 559872, while the sum is 49.

The square root of 923813986 is about 30394.3084474709. The cubic root of 923813986 is about 973.9309732996.

The spelling of 923813986 in words is "nine hundred twenty-three million, eight hundred thirteen thousand, nine hundred eighty-six".