9390881 has 4 divisors (see below), whose sum is σ = 9399600. Its totient is φ = 9382164.

The previous prime is 9390863. The next prime is 9390907. The reversal of 9390881 is 1880939.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9390881 - 2¹⁸ = 9128737 is a prime.

It is a super-2 number, since 2×9390881² = 176377291912322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9390811) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2471 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (2349900).

Almost surely, 2^9390881 is an apocalyptic number.

It is an amenable number.

9390881 is a deficient number, since it is larger than the sum of its proper divisors (8719).

9390881 is a wasteful number, since it uses less digits than its factorization.

9390881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 9390881 is about 3064.4544375794. The cubic root of 9390881 is about 210.9771618626.

The spelling of 9390881 in words is "nine million, three hundred ninety thousand, eight hundred eighty-one".