2904239890 has 32 divisors (see below), whose sum is σ = 5456976624. Its totient is φ = 1111760640.

The previous prime is 2904239873. The next prime is 2904239893. The reversal of 2904239890 is 989324092.

2904239890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1566655561 + 1337584329 = 39581^2 + 36573^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2904239890.

It is not an unprimeable number, because it can be changed into a prime (2904239893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41769 + ... + 86908.

Almost surely, 2^2904239890 is an apocalyptic number.

2904239890 is a deficient number, since it is larger than the sum of its proper divisors (2552736734).

2904239890 is a wasteful number, since it uses less digits than its factorization.

2904239890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128782.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2904239890 is about 53891.0000835019. Note that the first 4 decimals coincide. The cubic root of 2904239890 is about 1426.7377818390.

The spelling of 2904239890 in words is "two billion, nine hundred four million, two hundred thirty-nine thousand, eight hundred ninety".