9940618 has 4 divisors (see below), whose sum is σ = 14910930. Its totient is φ = 4970308.

The previous prime is 9940613. The next prime is 9940643. The reversal of 9940618 is 8160499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8160499 = 89 ⋅91691.

It can be written as a sum of positive squares in only one way, i.e., 9753129 + 187489 = 3123^2 + 433^2 .

It is not an unprimeable number, because it can be changed into a prime (9940613) 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 as a sum of consecutive naturals, namely, 2485153 + ... + 2485156.

Almost surely, 2^9940618 is an apocalyptic number.

9940618 is a deficient number, since it is larger than the sum of its proper divisors (4970312).

9940618 is a wasteful number, since it uses less digits than its factorization.

9940618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970311.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 9940618 is about 3152.8745614122. The cubic root of 9940618 is about 215.0161732921.

The spelling of 9940618 in words is "nine million, nine hundred forty thousand, six hundred eighteen".