1415887 has 4 divisors (see below), whose sum is σ = 1544616. Its totient is φ = 1287160.

The previous prime is 1415881. The next prime is 1415929. The reversal of 1415887 is 7885141.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1415887 is a prime.

It is a Duffinian number.

1415887 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64348 + ... + 64369.

It is an arithmetic number, because the mean of its divisors is an integer number (386154).

2^1415887 is an apocalyptic number.

1415887 is a deficient number, since it is larger than the sum of its proper divisors (128729).

1415887 is a wasteful number, since it uses less digits than its factorization.

1415887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128728.

The product of its digits is 8960, while the sum is 34.

The square root of 1415887 is about 1189.9105008361. The cubic root of 1415887 is about 112.2904609903.

The spelling of 1415887 in words is "one million, four hundred fifteen thousand, eight hundred eighty-seven".