9213994 has 4 divisors (see below), whose sum is σ = 13820994. Its totient is φ = 4606996.

The previous prime is 9213979. The next prime is 9214001. The reversal of 9213994 is 4993129.

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., 4782969 + 4431025 = 2187^2 + 2105^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2303497 + ... + 2303500.

Almost surely, 2^9213994 is an apocalyptic number.

9213994 is a deficient number, since it is larger than the sum of its proper divisors (4607000).

9213994 is a wasteful number, since it uses less digits than its factorization.

9213994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606999.

The product of its digits is 17496, while the sum is 37.

The square root of 9213994 is about 3035.4561436463. The cubic root of 9213994 is about 209.6440986064.

It can be divided in two parts, 921399 and 4, that added together give a triangular number (921403 = T₁₃₅₇).

The spelling of 9213994 in words is "nine million, two hundred thirteen thousand, nine hundred ninety-four".