989452942 has 4 divisors (see below), whose sum is σ = 1484179416. Its totient is φ = 494726470.

The previous prime is 989452931. The next prime is 989452963. The reversal of 989452942 is 249254989.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 989452942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247363234 + ... + 247363237.

It is an arithmetic number, because the mean of its divisors is an integer number (371044854).

Almost surely, 2^989452942 is an apocalyptic number.

989452942 is a deficient number, since it is larger than the sum of its proper divisors (494726474).

989452942 is a wasteful number, since it uses less digits than its factorization.

989452942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494726473.

The product of its digits is 1866240, while the sum is 52.

The square root of 989452942 is about 31455.5709215395. The cubic root of 989452942 is about 996.4718810153.

The spelling of 989452942 in words is "nine hundred eighty-nine million, four hundred fifty-two thousand, nine hundred forty-two".