1387434 has 16 divisors (see below), whose sum is σ = 2827872. Its totient is φ = 453648.

The previous prime is 1387433. The next prime is 1387499. The reversal of 1387434 is 4347831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1387433) 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, 1864 + ... + 2499.

It is an arithmetic number, because the mean of its divisors is an integer number (176742).

2^1387434 is an apocalyptic number.

1387434 is an abundant number, since it is smaller than the sum of its proper divisors (1440438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387434 is a wasteful number, since it uses less digits than its factorization.

1387434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421.

The product of its digits is 8064, while the sum is 30.

The square root of 1387434 is about 1177.8938831661. The cubic root of 1387434 is about 111.5331867136.

The spelling of 1387434 in words is "one million, three hundred eighty-seven thousand, four hundred thirty-four".