47904789509 has 32 divisors (see below), whose sum is σ = 52115374080. Its totient is φ = 43892476992.

The previous prime is 47904789479. The next prime is 47904789557. The reversal of 47904789509 is 90598740974.

It is not a de Polignac number, because 47904789509 - 2¹⁶ = 47904723973 is a prime.

It is a super-2 number, since 2×47904789509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47904789599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21356342 + ... + 21358584.

It is an arithmetic number, because the mean of its divisors is an integer number (1628605440).

Almost surely, 2^47904789509 is an apocalyptic number.

It is an amenable number.

47904789509 is a deficient number, since it is larger than the sum of its proper divisors (4210584571).

47904789509 is a wasteful number, since it uses less digits than its factorization.

47904789509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 47904789509 in words is "forty-seven billion, nine hundred four million, seven hundred eighty-nine thousand, five hundred nine".