47537779 has 2 divisors, whose sum is σ = 47537780. Its totient is φ = 47537778.

The previous prime is 47537761. The next prime is 47537783. The reversal of 47537779 is 97773574.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47537779 - 2¹¹ = 47535731 is a prime.

It is not a weakly prime, because it can be changed into another prime (47537759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23768889 + 23768890.

It is an arithmetic number, because the mean of its divisors is an integer number (23768890).

Almost surely, 2^47537779 is an apocalyptic number.

47537779 is a deficient number, since it is larger than the sum of its proper divisors (1).

47537779 is an equidigital number, since it uses as much as digits as its factorization.

47537779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296540, while the sum is 49.

The square root of 47537779 is about 6894.7646080196. The cubic root of 47537779 is about 362.2538104855.

The spelling of 47537779 in words is "forty-seven million, five hundred thirty-seven thousand, seven hundred seventy-nine".