4578639049 has 4 divisors (see below), whose sum is σ = 4777710336. Its totient is φ = 4379567764.

The previous prime is 4578639041. The next prime is 4578639061. The reversal of 4578639049 is 9409368754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4578639049 - 2³ = 4578639041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4578639041) 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, 99535609 + ... + 99535654.

It is an arithmetic number, because the mean of its divisors is an integer number (1194427584).

Almost surely, 2^4578639049 is an apocalyptic number.

It is an amenable number.

4578639049 is a deficient number, since it is larger than the sum of its proper divisors (199071287).

4578639049 is a wasteful number, since it uses less digits than its factorization.

4578639049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199071286.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 4578639049 is about 67665.6415694110. The cubic root of 4578639049 is about 1660.5251941776.

The spelling of 4578639049 in words is "four billion, five hundred seventy-eight million, six hundred thirty-nine thousand, forty-nine".