8921012 has 6 divisors (see below), whose sum is σ = 15611778. Its totient is φ = 4460504.

The previous prime is 8920999. The next prime is 8921021. The reversal of 8921012 is 2101298.

It can be written as a sum of positive squares in only one way, i.e., 8271376 + 649636 = 2876^2 + 806^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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, 1115123 + ... + 1115130.

It is an arithmetic number, because the mean of its divisors is an integer number (2601963).

Almost surely, 2^8921012 is an apocalyptic number.

It is an amenable number.

8921012 is a deficient number, since it is larger than the sum of its proper divisors (6690766).

8921012 is a wasteful number, since it uses less digits than its factorization.

8921012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230257 (or 2230255 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8921012 is about 2986.8063211397. The cubic root of 8921012 is about 207.3980686760.

The spelling of 8921012 in words is "eight million, nine hundred twenty-one thousand, twelve".