2908989251 has 4 divisors (see below), whose sum is σ = 3324559152. Its totient is φ = 2493419352.

The previous prime is 2908989241. The next prime is 2908989287. The reversal of 2908989251 is 1529898092.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2908989251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2908989193 and 2908989202.

It is not an unprimeable number, because it can be changed into a prime (2908989211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207784940 + ... + 207784953.

It is an arithmetic number, because the mean of its divisors is an integer number (831139788).

Almost surely, 2^2908989251 is an apocalyptic number.

2908989251 is a deficient number, since it is larger than the sum of its proper divisors (415569901).

2908989251 is an equidigital number, since it uses as much as digits as its factorization.

2908989251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415569900.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 2908989251 is about 53935.0465931012. The cubic root of 2908989251 is about 1427.5150824632.

The spelling of 2908989251 in words is "two billion, nine hundred eight million, nine hundred eighty-nine thousand, two hundred fifty-one".