998973 has 12 divisors (see below), whose sum is σ = 1496768. Its totient is φ = 665820.

The previous prime is 998969. The next prime is 998983. The reversal of 998973 is 379899.

It is a happy number.

It is not a de Polignac number, because 998973 - 2² = 998969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813 + ... + 2298.

2⁹⁹⁸⁹⁷³ is an apocalyptic number.

It is an amenable number.

998973 is a deficient number, since it is larger than the sum of its proper divisors (497795).

998973 is an equidigital number, since it uses as much as digits as its factorization.

998973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126 (or 4114 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 998973 is about 999.4863680911. The cubic root of 998973 is about 99.9657549408.

The spelling of 998973 in words is "nine hundred ninety-eight thousand, nine hundred seventy-three".