1387011 has 4 divisors (see below), whose sum is σ = 1849352. Its totient is φ = 924672.

The previous prime is 1387007. The next prime is 1387021. The reversal of 1387011 is 1107831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1387011 - 2² = 1387007 is a prime.

It is a D-number.

It is a Duffinian number.

1387011 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1387021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231166 + ... + 231171.

It is an arithmetic number, because the mean of its divisors is an integer number (462338).

2^1387011 is an apocalyptic number.

1387011 is a deficient number, since it is larger than the sum of its proper divisors (462341).

1387011 is an equidigital number, since it uses as much as digits as its factorization.

1387011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462340.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1387011 is about 1177.7143117072. The cubic root of 1387011 is about 111.5218508390.

The spelling of 1387011 in words is "one million, three hundred eighty-seven thousand, eleven".