9161398 has 4 divisors (see below), whose sum is σ = 13742100. Its totient is φ = 4580698.

The previous prime is 9161389. The next prime is 9161413. The reversal of 9161398 is 8931619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8931619 = 2441 ⋅3659.

It is a congruent number.

It is an unprimeable number.

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, 2290348 + ... + 2290351.

It is an arithmetic number, because the mean of its divisors is an integer number (3435525).

Almost surely, 2^9161398 is an apocalyptic number.

9161398 is a deficient number, since it is larger than the sum of its proper divisors (4580702).

9161398 is a wasteful number, since it uses less digits than its factorization.

9161398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580701.

The product of its digits is 11664, while the sum is 37.

The square root of 9161398 is about 3026.7801373737. The cubic root of 9161398 is about 209.2444352086.

It can be divided in two parts, 9161 and 398, that added together give a palindrome (9559).

The spelling of 9161398 in words is "nine million, one hundred sixty-one thousand, three hundred ninety-eight".