1087932389 has 2 divisors, whose sum is σ = 1087932390. Its totient is φ = 1087932388.

The previous prime is 1087932367. The next prime is 1087932413. The reversal of 1087932389 is 9832397801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631768225 + 456164164 = 25135^2 + 21358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087932389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087934389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543966194 + 543966195.

It is an arithmetic number, because the mean of its divisors is an integer number (543966195).

Almost surely, 2^1087932389 is an apocalyptic number.

It is an amenable number.

1087932389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087932389 is an equidigital number, since it uses as much as digits as its factorization.

1087932389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 1087932389 is about 32983.8201092596. The cubic root of 1087932389 is about 1028.4913310524.

The spelling of 1087932389 in words is "one billion, eighty-seven million, nine hundred thirty-two thousand, three hundred eighty-nine".