2809402234 has 4 divisors (see below), whose sum is σ = 4214103354. Its totient is φ = 1404701116.

The previous prime is 2809402199. The next prime is 2809402241. The reversal of 2809402234 is 4322049082.

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

It can be written as a sum of positive squares in only one way, i.e., 2430983025 + 378419209 = 49305^2 + 19453^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2809402234.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 702350557 + ... + 702350560.

Almost surely, 2^2809402234 is an apocalyptic number.

2809402234 is a deficient number, since it is larger than the sum of its proper divisors (1404701120).

2809402234 is a wasteful number, since it uses less digits than its factorization.

2809402234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404701119.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 2809402234 is about 53003.7945245432. The cubic root of 2809402234 is about 1411.0356112626.

The spelling of 2809402234 in words is "two billion, eight hundred nine million, four hundred two thousand, two hundred thirty-four".