998153 has 4 divisors (see below), whose sum is σ = 1074948. Its totient is φ = 921360.

The previous prime is 998147. The next prime is 998161. The reversal of 998153 is 351899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351899 = 19 ⋅18521.

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 425104 = 757^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 998153 - 2⁸ = 997897 is a prime.

It is a super-2 number, since 2×998153² = 1992618822818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998353) 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, 38378 + ... + 38403.

It is an arithmetic number, because the mean of its divisors is an integer number (268737).

2⁹⁹⁸¹⁵³ is an apocalyptic number.

It is an amenable number.

998153 is a deficient number, since it is larger than the sum of its proper divisors (76795).

998153 is a wasteful number, since it uses less digits than its factorization.

998153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76794.

The product of its digits is 9720, while the sum is 35.

The square root of 998153 is about 999.0760731796. The cubic root of 998153 is about 99.9383953898.

The spelling of 998153 in words is "nine hundred ninety-eight thousand, one hundred fifty-three".