47785897 has 2 divisors, whose sum is σ = 47785898. Its totient is φ = 47785896.

The previous prime is 47785889. The next prime is 47785919. The reversal of 47785897 is 79858774.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33977241 + 13808656 = 5829^2 + 3716^2 .

It is a cyclic number.

It is not a de Polignac number, because 47785897 - 2³ = 47785889 is a prime.

It is not a weakly prime, because it can be changed into another prime (47785847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23892948 + 23892949.

It is an arithmetic number, because the mean of its divisors is an integer number (23892949).

Almost surely, 2^47785897 is an apocalyptic number.

It is an amenable number.

47785897 is a deficient number, since it is larger than the sum of its proper divisors (1).

47785897 is an equidigital number, since it uses as much as digits as its factorization.

47785897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The square root of 47785897 is about 6912.7344083221. The cubic root of 47785897 is about 362.8829645953.

It can be divided in two parts, 4778589 and 7, that added together give a square (4778596 = 2186²).

The spelling of 47785897 in words is "forty-seven million, seven hundred eighty-five thousand, eight hundred ninety-seven".