47656397 has 2 divisors, whose sum is σ = 47656398. Its totient is φ = 47656396.

The previous prime is 47656379. The next prime is 47656403. The reversal of 47656397 is 79365674.

It is a happy number.

Together with previous prime (47656379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45981961 + 1674436 = 6781^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 47656397 - 2¹⁰ = 47655373 is a prime.

It is a super-2 number, since 2×47656397² = 4542264350043218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47656327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23828198 + 23828199.

It is an arithmetic number, because the mean of its divisors is an integer number (23828199).

Almost surely, 2^47656397 is an apocalyptic number.

It is an amenable number.

47656397 is a deficient number, since it is larger than the sum of its proper divisors (1).

47656397 is an equidigital number, since it uses as much as digits as its factorization.

47656397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The square root of 47656397 is about 6903.3612827376. The cubic root of 47656397 is about 362.5548631984.

The spelling of 47656397 in words is "forty-seven million, six hundred fifty-six thousand, three hundred ninety-seven".