2002090997 has 2 divisors, whose sum is σ = 2002090998. Its totient is φ = 2002090996.

The previous prime is 2002090973. The next prime is 2002091027. The reversal of 2002090997 is 7990902002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1952402596 + 49688401 = 44186^2 + 7049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002090997 - 2¹⁶ = 2002025461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002090997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002090297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001045498 + 1001045499.

It is an arithmetic number, because the mean of its divisors is an integer number (1001045499).

Almost surely, 2^2002090997 is an apocalyptic number.

It is an amenable number.

2002090997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002090997 is an equidigital number, since it uses as much as digits as its factorization.

2002090997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 2002090997 is about 44744.7314999207. The cubic root of 2002090997 is about 1260.3599788198.

Adding to 2002090997 its reverse (7990902002), we get a palindrome (9992992999).

The spelling of 2002090997 in words is "two billion, two million, ninety thousand, nine hundred ninety-seven".