2897929961 has 2 divisors, whose sum is σ = 2897929962. Its totient is φ = 2897929960.

The previous prime is 2897929943. The next prime is 2897930017. The reversal of 2897929961 is 1699297982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2857543936 + 40386025 = 53456^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2897929961 - 2¹⁰ = 2897928937 is a prime.

It is a super-2 number, since 2×2897929961² = 16795996117722923042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2897929894 and 2897929903.

It is not a weakly prime, because it can be changed into another prime (2897929061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1448964980 + 1448964981.

It is an arithmetic number, because the mean of its divisors is an integer number (1448964981).

Almost surely, 2^2897929961 is an apocalyptic number.

It is an amenable number.

2897929961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2897929961 is an equidigital number, since it uses as much as digits as its factorization.

2897929961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 2897929961 is about 53832.4248107031. The cubic root of 2897929961 is about 1425.7037600635.

The spelling of 2897929961 in words is "two billion, eight hundred ninety-seven million, nine hundred twenty-nine thousand, nine hundred sixty-one".