8901993 has 4 divisors (see below), whose sum is σ = 11869328. Its totient is φ = 5934660.

The previous prime is 8901953. The next prime is 8902001. The reversal of 8901993 is 3991098.

8901993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8901993 - 2¹⁸ = 8639849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8901923) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1483663 + ... + 1483668.

It is an arithmetic number, because the mean of its divisors is an integer number (2967332).

Almost surely, 2^8901993 is an apocalyptic number.

It is an amenable number.

8901993 is a deficient number, since it is larger than the sum of its proper divisors (2967335).

8901993 is a wasteful number, since it uses less digits than its factorization.

8901993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967334.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 8901993 is about 2983.6207868964. The cubic root of 8901993 is about 207.2505775493.

The spelling of 8901993 in words is "eight million, nine hundred one thousand, nine hundred ninety-three".