47407447 has 2 divisors, whose sum is σ = 47407448. Its totient is φ = 47407446.

The previous prime is 47407421. The next prime is 47407453. The reversal of 47407447 is 74470474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47407447 - 2⁷ = 47407319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47407847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23703723 + 23703724.

It is an arithmetic number, because the mean of its divisors is an integer number (23703724).

Almost surely, 2^47407447 is an apocalyptic number.

47407447 is a deficient number, since it is larger than the sum of its proper divisors (1).

47407447 is an equidigital number, since it uses as much as digits as its factorization.

47407447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 37.

The square root of 47407447 is about 6885.3066017426. The cubic root of 47407447 is about 361.9224496332.

The spelling of 47407447 in words is "forty-seven million, four hundred seven thousand, four hundred forty-seven".