1001299997 has 2 divisors, whose sum is σ = 1001299998. Its totient is φ = 1001299996.

The previous prime is 1001299987. The next prime is 1001300011. The reversal of 1001299997 is 7999921001.

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., 791803321 + 209496676 = 28139^2 + 14474^2 .

It is an emirp because it is prime and its reverse (7999921001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001299997 - 2¹⁸ = 1001037853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001299927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500649998 + 500649999.

It is an arithmetic number, because the mean of its divisors is an integer number (500649999).

Almost surely, 2^1001299997 is an apocalyptic number.

It is an amenable number.

1001299997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001299997 is an equidigital number, since it uses as much as digits as its factorization.

1001299997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 47.

The square root of 1001299997 is about 31643.3246830986. The cubic root of 1001299997 is about 1000.4331446919.

The spelling of 1001299997 in words is "one billion, one million, two hundred ninety-nine thousand, nine hundred ninety-seven".