9390661 has 4 divisors (see below), whose sum is σ = 10732192. Its totient is φ = 8049132.

The previous prime is 9390643. The next prime is 9390671. The reversal of 9390661 is 1660939.

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 an emirpimes, since its reverse is a distinct semiprime: 1660939 = 7 ⋅237277.

It is not a de Polignac number, because 9390661 - 2⁵ = 9390629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9390671) 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, 670755 + ... + 670768.

It is an arithmetic number, because the mean of its divisors is an integer number (2683048).

Almost surely, 2^9390661 is an apocalyptic number.

It is an amenable number.

9390661 is a deficient number, since it is larger than the sum of its proper divisors (1341531).

9390661 is a wasteful number, since it uses less digits than its factorization.

9390661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341530.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 9390661 is about 3064.4185419097. The cubic root of 9390661 is about 210.9755143303.

The spelling of 9390661 in words is "nine million, three hundred ninety thousand, six hundred sixty-one".