9799138 has 4 divisors (see below), whose sum is σ = 14698710. Its totient is φ = 4899568.

The previous prime is 9799103. The next prime is 9799147. The reversal of 9799138 is 8319979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8319979 = 619 ⋅13441.

It can be written as a sum of positive squares in only one way, i.e., 6365529 + 3433609 = 2523^2 + 1853^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2449783 + ... + 2449786.

Almost surely, 2^9799138 is an apocalyptic number.

9799138 is a deficient number, since it is larger than the sum of its proper divisors (4899572).

9799138 is a wasteful number, since it uses less digits than its factorization.

9799138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899571.

The product of its digits is 122472, while the sum is 46.

The square root of 9799138 is about 3130.3574875723. The cubic root of 9799138 is about 213.9912215807.

It can be divided in two parts, 97 and 99138, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 9799138 in words is "nine million, seven hundred ninety-nine thousand, one hundred thirty-eight".