47291687 has 2 divisors, whose sum is σ = 47291688. Its totient is φ = 47291686.

The previous prime is 47291683. The next prime is 47291707. The reversal of 47291687 is 78619274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47291687 - 2² = 47291683 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 (47291681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23645843 + 23645844.

It is an arithmetic number, because the mean of its divisors is an integer number (23645844).

Almost surely, 2^47291687 is an apocalyptic number.

47291687 is a deficient number, since it is larger than the sum of its proper divisors (1).

47291687 is an equidigital number, since it uses as much as digits as its factorization.

47291687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 47291687 is about 6876.8951569731. The cubic root of 47291687 is about 361.6276275284.

The spelling of 47291687 in words is "forty-seven million, two hundred ninety-one thousand, six hundred eighty-seven".