2783934989 has 4 divisors (see below), whose sum is σ = 3037020000. Its totient is φ = 2530849980.

The previous prime is 2783934947. The next prime is 2783934991. The reversal of 2783934989 is 9894393872.

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 2783934989 - 2²⁰ = 2782886413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783934289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126542489 + ... + 126542510.

It is an arithmetic number, because the mean of its divisors is an integer number (759255000).

Almost surely, 2^2783934989 is an apocalyptic number.

It is an amenable number.

2783934989 is a deficient number, since it is larger than the sum of its proper divisors (253085011).

2783934989 is a wasteful number, since it uses less digits than its factorization.

2783934989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253085010.

The product of its digits is 23514624, while the sum is 62.

The square root of 2783934989 is about 52763.0077705962. The cubic root of 2783934989 is about 1406.7589809802.

It can be divided in two parts, 278393 and 4989, that added together give a palindrome (283382).

The spelling of 2783934989 in words is "two billion, seven hundred eighty-three million, nine hundred thirty-four thousand, nine hundred eighty-nine".