1009887497 has 2 divisors, whose sum is σ = 1009887498. Its totient is φ = 1009887496.

The previous prime is 1009887433. The next prime is 1009887521. The reversal of 1009887497 is 7947889001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005460681 + 4426816 = 31709^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009887497 - 2⁶ = 1009887433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1009884497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504943748 + 504943749.

It is an arithmetic number, because the mean of its divisors is an integer number (504943749).

Almost surely, 2^1009887497 is an apocalyptic number.

It is an amenable number.

1009887497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009887497 is an equidigital number, since it uses as much as digits as its factorization.

1009887497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 1009887497 is about 31778.7271142190. The cubic root of 1009887497 is about 1003.2850291004.

The spelling of 1009887497 in words is "one billion, nine million, eight hundred eighty-seven thousand, four hundred ninety-seven".