2689229947 has 2 divisors, whose sum is σ = 2689229948. Its totient is φ = 2689229946.

The previous prime is 2689229941. The next prime is 2689229951. The reversal of 2689229947 is 7499229862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689229947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2689229891 and 2689229900.

It is not a weakly prime, because it can be changed into another prime (2689229941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344614973 + 1344614974.

It is an arithmetic number, because the mean of its divisors is an integer number (1344614974).

Almost surely, 2^2689229947 is an apocalyptic number.

2689229947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689229947 is an equidigital number, since it uses as much as digits as its factorization.

2689229947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 2689229947 is about 51857.7857895996. The cubic root of 2689229947 is about 1390.6226954855.

The spelling of 2689229947 in words is "two billion, six hundred eighty-nine million, two hundred twenty-nine thousand, nine hundred forty-seven".