9918442 has 8 divisors (see below), whose sum is σ = 15279876. Its totient is φ = 4825152.

The previous prime is 9918421. The next prime is 9918521. The reversal of 9918442 is 2448199.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9247681 + 670761 = 3041^2 + 819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66943 + ... + 67090.

Almost surely, 2^9918442 is an apocalyptic number.

9918442 is a deficient number, since it is larger than the sum of its proper divisors (5361434).

9918442 is a wasteful number, since it uses less digits than its factorization.

9918442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134072.

The product of its digits is 20736, while the sum is 37.

The square root of 9918442 is about 3149.3558071453. The cubic root of 9918442 is about 214.8561648376.

The spelling of 9918442 in words is "nine million, nine hundred eighteen thousand, four hundred forty-two".