47078477 has 2 divisors, whose sum is σ = 47078478. Its totient is φ = 47078476.

The previous prime is 47078441. The next prime is 47078509. The reversal of 47078477 is 77487074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35593156 + 11485321 = 5966^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 47078477 - 2⁶ = 47078413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47078407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23539238 + 23539239.

It is an arithmetic number, because the mean of its divisors is an integer number (23539239).

Almost surely, 2^47078477 is an apocalyptic number.

It is an amenable number.

47078477 is a deficient number, since it is larger than the sum of its proper divisors (1).

47078477 is an equidigital number, since it uses as much as digits as its factorization.

47078477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 307328, while the sum is 44.

The square root of 47078477 is about 6861.3757366872. The cubic root of 47078477 is about 361.0833543706.

The spelling of 47078477 in words is "forty-seven million, seventy-eight thousand, four hundred seventy-seven".