2689999901 has 2 divisors, whose sum is σ = 2689999902. Its totient is φ = 2689999900.

The previous prime is 2689999847. The next prime is 2689999909. The reversal of 2689999901 is 1099999862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2677959001 + 12040900 = 51749^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689999901 - 2²² = 2685805597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689999909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344999950 + 1344999951.

It is an arithmetic number, because the mean of its divisors is an integer number (1344999951).

Almost surely, 2^2689999901 is an apocalyptic number.

It is an amenable number.

2689999901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689999901 is an equidigital number, since it uses as much as digits as its factorization.

2689999901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 62.

The square root of 2689999901 is about 51865.2089651628. The cubic root of 2689999901 is about 1390.7553993150.

The spelling of 2689999901 in words is "two billion, six hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred one".