993487 has 8 divisors (see below), whose sum is σ = 1113552. Its totient is φ = 878400.

The previous prime is 993481. The next prime is 993493. The reversal of 993487 is 784399.

It is an interprime number because it is at equal distance from previous prime (993481) and next prime (993493).

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 993487 - 2³ = 993479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993481) 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, 814 + ... + 1627.

It is an arithmetic number, because the mean of its divisors is an integer number (139194).

2⁹⁹³⁴⁸⁷ is an apocalyptic number.

993487 is the 814-th pentagonal number.

993487 is a deficient number, since it is larger than the sum of its proper divisors (120065).

993487 is a wasteful number, since it uses less digits than its factorization.

993487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489.

The product of its digits is 54432, while the sum is 40.

The square root of 993487 is about 996.7381802660. The cubic root of 993487 is about 99.7824269631.

The spelling of 993487 in words is "nine hundred ninety-three thousand, four hundred eighty-seven".