2906404889 has 4 divisors (see below), whose sum is σ = 2936367924. Its totient is φ = 2876441856.

The previous prime is 2906404883. The next prime is 2906404903. The reversal of 2906404889 is 9884046092.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1557091600 + 1349313289 = 39460^2 + 36733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2906404889 - 2¹⁶ = 2906339353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2906404883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14981372 + ... + 14981565.

It is an arithmetic number, because the mean of its divisors is an integer number (734091981).

Almost surely, 2^2906404889 is an apocalyptic number.

It is an amenable number.

2906404889 is a deficient number, since it is larger than the sum of its proper divisors (29963035).

2906404889 is an equidigital number, since it uses as much as digits as its factorization.

2906404889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29963034.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 2906404889 is about 53911.0831740561. The cubic root of 2906404889 is about 1427.0922198053.

The spelling of 2906404889 in words is "two billion, nine hundred six million, four hundred four thousand, eight hundred eighty-nine".