1387293 has 8 divisors (see below), whose sum is σ = 1861728. Its totient is φ = 918864.

The previous prime is 1387289. The next prime is 1387313. The reversal of 1387293 is 3927831.

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

It is not a de Polignac number, because 1387293 - 2² = 1387289 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930 + ... + 1907.

It is an arithmetic number, because the mean of its divisors is an integer number (232716).

2^1387293 is an apocalyptic number.

It is an amenable number.

1387293 is a deficient number, since it is larger than the sum of its proper divisors (474435).

1387293 is a wasteful number, since it uses less digits than its factorization.

1387293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003.

The product of its digits is 9072, while the sum is 33.

The square root of 1387293 is about 1177.8340290550. The cubic root of 1387293 is about 111.5294083447.

The spelling of 1387293 in words is "one million, three hundred eighty-seven thousand, two hundred ninety-three".