47077813 has 2 divisors, whose sum is σ = 47077814. Its totient is φ = 47077812.

The previous prime is 47077783. The next prime is 47077829. The reversal of 47077813 is 31877074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24581764 + 22496049 = 4958^2 + 4743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47077813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47077843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23538906 + 23538907.

It is an arithmetic number, because the mean of its divisors is an integer number (23538907).

Almost surely, 2^47077813 is an apocalyptic number.

It is an amenable number.

47077813 is a deficient number, since it is larger than the sum of its proper divisors (1).

47077813 is an equidigital number, since it uses as much as digits as its factorization.

47077813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 47077813 is about 6861.3273497189. The cubic root of 47077813 is about 361.0816567762.

The spelling of 47077813 in words is "forty-seven million, seventy-seven thousand, eight hundred thirteen".