47678797 has 2 divisors, whose sum is σ = 47678798. Its totient is φ = 47678796.

The previous prime is 47678789. The next prime is 47678801. The reversal of 47678797 is 79787674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36348841 + 11329956 = 6029^2 + 3366^2 .

It is a cyclic number.

It is not a de Polignac number, because 47678797 - 2³ = 47678789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47672797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23839398 + 23839399.

It is an arithmetic number, because the mean of its divisors is an integer number (23839399).

Almost surely, 2^47678797 is an apocalyptic number.

It is an amenable number.

47678797 is a deficient number, since it is larger than the sum of its proper divisors (1).

47678797 is an equidigital number, since it uses as much as digits as its factorization.

47678797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4148928, while the sum is 55.

The square root of 47678797 is about 6904.9834902047. The cubic root of 47678797 is about 362.6116583499.

The spelling of 47678797 in words is "forty-seven million, six hundred seventy-eight thousand, seven hundred ninety-seven".