47042789 has 2 divisors, whose sum is σ = 47042790. Its totient is φ = 47042788.

The previous prime is 47042761. The next prime is 47042813. The reversal of 47042789 is 98724074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40742689 + 6300100 = 6383^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 47042789 - 2⁸ = 47042533 is a prime.

It is a super-3 number, since 3×47042789³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47042719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23521394 + 23521395.

It is an arithmetic number, because the mean of its divisors is an integer number (23521395).

Almost surely, 2^47042789 is an apocalyptic number.

It is an amenable number.

47042789 is a deficient number, since it is larger than the sum of its proper divisors (1).

47042789 is an equidigital number, since it uses as much as digits as its factorization.

47042789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 47042789 is about 6858.7745990082. The cubic root of 47042789 is about 360.9920911500.

The spelling of 47042789 in words is "forty-seven million, forty-two thousand, seven hundred eighty-nine".