975539987 has 2 divisors, whose sum is σ = 975539988. Its totient is φ = 975539986.

The previous prime is 975539869. The next prime is 975540017. The reversal of 975539987 is 789935579.

It is a happy number.

975539987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (789935579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 975539987 - 2⁸ = 975539731 is a prime.

It is a super-3 number, since 3×975539987³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975539387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487769993 + 487769994.

It is an arithmetic number, because the mean of its divisors is an integer number (487769994).

Almost surely, 2^975539987 is an apocalyptic number.

975539987 is a deficient number, since it is larger than the sum of its proper divisors (1).

975539987 is an equidigital number, since it uses as much as digits as its factorization.

975539987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21432600, while the sum is 62.

The square root of 975539987 is about 31233.6355072540. The cubic root of 975539987 is about 991.7792670704.

The spelling of 975539987 in words is "nine hundred seventy-five million, five hundred thirty-nine thousand, nine hundred eighty-seven".