923977994 has 4 divisors (see below), whose sum is σ = 1385966994. Its totient is φ = 461988996.

The previous prime is 923977987. The next prime is 923978021. The reversal of 923977994 is 499779329.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499779329 = 7 ⋅71397047.

It can be written as a sum of positive squares in only one way, i.e., 834921025 + 89056969 = 28895^2 + 9437^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230994497 + ... + 230994500.

Almost surely, 2^923977994 is an apocalyptic number.

923977994 is a deficient number, since it is larger than the sum of its proper divisors (461989000).

923977994 is a wasteful number, since it uses less digits than its factorization.

923977994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461988999.

The product of its digits is 7715736, while the sum is 59.

The square root of 923977994 is about 30397.0063328611. The cubic root of 923977994 is about 973.9886050385.

The spelling of 923977994 in words is "nine hundred twenty-three million, nine hundred seventy-seven thousand, nine hundred ninety-four".