47400473 has 2 divisors, whose sum is σ = 47400474. Its totient is φ = 47400472.

The previous prime is 47400427. The next prime is 47400499. The reversal of 47400473 is 37400474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30327049 + 17073424 = 5507^2 + 4132^2 .

It is a cyclic number.

It is not a de Polignac number, because 47400473 - 2²⁰ = 46351897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (47400173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23700236 + 23700237.

It is an arithmetic number, because the mean of its divisors is an integer number (23700237).

Almost surely, 2^47400473 is an apocalyptic number.

It is an amenable number.

47400473 is a deficient number, since it is larger than the sum of its proper divisors (1).

47400473 is an equidigital number, since it uses as much as digits as its factorization.

47400473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 47400473 is about 6884.8001423426. The cubic root of 47400473 is about 361.9047015711.

Subtracting from 47400473 its reverse (37400474), we obtain a palindrome (9999999).

The spelling of 47400473 in words is "forty-seven million, four hundred thousand, four hundred seventy-three".