987055793 has 2 divisors, whose sum is σ = 987055794. Its totient is φ = 987055792.

The previous prime is 987055739. The next prime is 987055799. The reversal of 987055793 is 397550789.

It is a happy number.

Together with previous prime (987055739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 735928384 + 251127409 = 27128^2 + 15847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987055793 is a prime.

It is not a weakly prime, because it can be changed into another prime (987055799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493527896 + 493527897.

It is an arithmetic number, because the mean of its divisors is an integer number (493527897).

Almost surely, 2^987055793 is an apocalyptic number.

It is an amenable number.

987055793 is a deficient number, since it is larger than the sum of its proper divisors (1).

987055793 is an equidigital number, since it uses as much as digits as its factorization.

987055793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 987055793 is about 31417.4440876402. Note that the first 3 decimals coincide. The cubic root of 987055793 is about 995.6665123444. Note that the first 3 decimals are identical.

The spelling of 987055793 in words is "nine hundred eighty-seven million, fifty-five thousand, seven hundred ninety-three".