47783389 has 2 divisors, whose sum is σ = 47783390. Its totient is φ = 47783388.

The previous prime is 47783383. The next prime is 47783401. The reversal of 47783389 is 98338774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44116164 + 3667225 = 6642^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 47783389 - 2³ = 47783381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47783381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23891694 + 23891695.

It is an arithmetic number, because the mean of its divisors is an integer number (23891695).

Almost surely, 2^47783389 is an apocalyptic number.

It is an amenable number.

47783389 is a deficient number, since it is larger than the sum of its proper divisors (1).

47783389 is an equidigital number, since it uses as much as digits as its factorization.

47783389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 47783389 is about 6912.5530016051. The cubic root of 47783389 is about 362.8766159551.

The spelling of 47783389 in words is "forty-seven million, seven hundred eighty-three thousand, three hundred eighty-nine".