1387473 has 4 divisors (see below), whose sum is σ = 1849968. Its totient is φ = 924980.

The previous prime is 1387433. The next prime is 1387499. The reversal of 1387473 is 3747831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1387473 - 2¹² = 1383377 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1387403) 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 3 ways as a sum of consecutive naturals, for example, 231243 + ... + 231248.

It is an arithmetic number, because the mean of its divisors is an integer number (462492).

2^1387473 is an apocalyptic number.

It is an amenable number.

1387473 is a deficient number, since it is larger than the sum of its proper divisors (462495).

1387473 is an equidigital number, since it uses as much as digits as its factorization.

1387473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462494.

The product of its digits is 14112, while the sum is 33.

The square root of 1387473 is about 1177.9104380215. The cubic root of 1387473 is about 111.5342317491.

The spelling of 1387473 in words is "one million, three hundred eighty-seven thousand, four hundred seventy-three".