1487993 has 8 divisors (see below), whose sum is σ = 1696968. Its totient is φ = 1292544.

The previous prime is 1487989. The next prime is 1488007. The reversal of 1487993 is 3997841.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 619369 + 868624 = 787^2 + 932^2 .

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

It is not a de Polignac number, because 1487993 - 2² = 1487989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1487993.

It is not an unprimeable number, because it can be changed into a prime (1487933) 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, 3146 + ... + 3587.

It is an arithmetic number, because the mean of its divisors is an integer number (212121).

2^1487993 is an apocalyptic number.

1487993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1487993 is a deficient number, since it is larger than the sum of its proper divisors (208975).

1487993 is a wasteful number, since it uses less digits than its factorization.

1487993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763.

The product of its digits is 54432, while the sum is 41.

The square root of 1487993 is about 1219.8331853167. The cubic root of 1487993 is about 114.1651704447.

The spelling of 1487993 in words is "one million, four hundred eighty-seven thousand, nine hundred ninety-three".