989854 has 4 divisors (see below), whose sum is σ = 1484784. Its totient is φ = 494926.

The previous prime is 989839. The next prime is 989869. The reversal of 989854 is 458989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458989 = 277 ⋅1657.

It is an interprime number because it is at equal distance from previous prime (989839) and next prime (989869).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 989854.

It is a congruent number.

It is an unprimeable number.

989854 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247462 + ... + 247465.

It is an arithmetic number, because the mean of its divisors is an integer number (371196).

2⁹⁸⁹⁸⁵⁴ is an apocalyptic number.

989854 is a deficient number, since it is larger than the sum of its proper divisors (494930).

989854 is a wasteful number, since it uses less digits than its factorization.

989854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494929.

The product of its digits is 103680, while the sum is 43.

The square root of 989854 is about 994.9140666409. The cubic root of 989854 is about 99.6606497165.

It can be divided in two parts, 98985 and 4, that added together give a palindrome (98989).

The spelling of 989854 in words is "nine hundred eighty-nine thousand, eight hundred fifty-four".