998670443 has 4 divisors (see below), whose sum is σ = 1013576040. Its totient is φ = 983764848.

The previous prime is 998670427. The next prime is 998670461. The reversal of 998670443 is 344076899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344076899 = 1307 ⋅263257.

It is a cyclic number.

It is not a de Polignac number, because 998670443 - 2⁴ = 998670427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998670391 and 998670400.

It is not an unprimeable number, because it can be changed into a prime (998670473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7452698 + ... + 7452831.

It is an arithmetic number, because the mean of its divisors is an integer number (253394010).

Almost surely, 2^998670443 is an apocalyptic number.

998670443 is a deficient number, since it is larger than the sum of its proper divisors (14905597).

998670443 is a wasteful number, since it uses less digits than its factorization.

998670443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14905596.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 998670443 is about 31601.7474675057. The cubic root of 998670443 is about 999.5566177746.

The spelling of 998670443 in words is "nine hundred ninety-eight million, six hundred seventy thousand, four hundred forty-three".