989540293 has 8 divisors (see below), whose sum is σ = 1180073088. Its totient is φ = 811299984.

The previous prime is 989540269. The next prime is 989540309. The reversal of 989540293 is 392045989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989540293 - 2²¹ = 987443141 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 (989540593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072946 + ... + 3073267.

It is an arithmetic number, because the mean of its divisors is an integer number (147509136).

Almost surely, 2^989540293 is an apocalyptic number.

It is an amenable number.

989540293 is a deficient number, since it is larger than the sum of its proper divisors (190532795).

989540293 is a wasteful number, since it uses less digits than its factorization.

989540293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146243.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 989540293 is about 31456.9593730863. The cubic root of 989540293 is about 996.5012037014.

The spelling of 989540293 in words is "nine hundred eighty-nine million, five hundred forty thousand, two hundred ninety-three".