47666407 has 2 divisors, whose sum is σ = 47666408. Its totient is φ = 47666406.

The previous prime is 47666387. The next prime is 47666417. The reversal of 47666407 is 70466674.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47666407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47666407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47666417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23833203 + 23833204.

It is an arithmetic number, because the mean of its divisors is an integer number (23833204).

Almost surely, 2^47666407 is an apocalyptic number.

47666407 is a deficient number, since it is larger than the sum of its proper divisors (1).

47666407 is an equidigital number, since it uses as much as digits as its factorization.

47666407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 47666407 is about 6904.0862538065. The cubic root of 47666407 is about 362.5802457307.

The spelling of 47666407 in words is "forty-seven million, six hundred sixty-six thousand, four hundred seven".