975427987 has 2 divisors, whose sum is σ = 975427988. Its totient is φ = 975427986.

The previous prime is 975427961. The next prime is 975427991. The reversal of 975427987 is 789724579.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 975427987 - 2¹⁵ = 975395219 is a prime.

It is not a weakly prime, because it can be changed into another prime (975427787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487713993 + 487713994.

It is an arithmetic number, because the mean of its divisors is an integer number (487713994).

Almost surely, 2^975427987 is an apocalyptic number.

975427987 is a deficient number, since it is larger than the sum of its proper divisors (1).

975427987 is an equidigital number, since it uses as much as digits as its factorization.

975427987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 58.

The square root of 975427987 is about 31231.8425168929. The cubic root of 975427987 is about 991.7413108169.

The spelling of 975427987 in words is "nine hundred seventy-five million, four hundred twenty-seven thousand, nine hundred eighty-seven".