1087389 has 12 divisors (see below), whose sum is σ = 1653600. Its totient is φ = 686664.

The previous prime is 1087381. The next prime is 1087391. The reversal of 1087389 is 9837801.

It is not a de Polignac number, because 1087389 - 2³ = 1087381 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

1087389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087381) 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 11 ways as a sum of consecutive naturals, for example, 3009 + ... + 3350.

It is an arithmetic number, because the mean of its divisors is an integer number (137800).

2^1087389 is an apocalyptic number.

1087389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1087389 is a deficient number, since it is larger than the sum of its proper divisors (566211).

1087389 is a wasteful number, since it uses less digits than its factorization.

1087389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1087389 is about 1042.7794589461. The cubic root of 1087389 is about 102.8320069200.

The spelling of 1087389 in words is "one million, eighty-seven thousand, three hundred eighty-nine".