47892789 has 20 divisors (see below), whose sum is σ = 81765024. Its totient is φ = 27366984.

The previous prime is 47892773. The next prime is 47892809. The reversal of 47892789 is 98729874.

47892789 is a `hidden beast` number, since 478 + 92 + 7 + 89 = 666.

It is not a de Polignac number, because 47892789 - 2⁴ = 47892773 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47892989) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41667 + ... + 42800.

Almost surely, 2^47892789 is an apocalyptic number.

It is an amenable number.

47892789 is a deficient number, since it is larger than the sum of its proper divisors (33872235).

47892789 is an equidigital number, since it uses as much as digits as its factorization.

47892789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84486 (or 84477 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 47892789 is about 6920.4616175512. The cubic root of 47892789 is about 363.1533400384.

The spelling of 47892789 in words is "forty-seven million, eight hundred ninety-two thousand, seven hundred eighty-nine".