47391623 has 2 divisors, whose sum is σ = 47391624. Its totient is φ = 47391622.

The previous prime is 47391611. The next prime is 47391637. The reversal of 47391623 is 32619374.

47391623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47391623 - 2⁴ = 47391607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47391683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23695811 + 23695812.

It is an arithmetic number, because the mean of its divisors is an integer number (23695812).

Almost surely, 2^47391623 is an apocalyptic number.

47391623 is a deficient number, since it is larger than the sum of its proper divisors (1).

47391623 is an equidigital number, since it uses as much as digits as its factorization.

47391623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 47391623 is about 6884.1573921577. The cubic root of 47391623 is about 361.8821767891.

The spelling of 47391623 in words is "forty-seven million, three hundred ninety-one thousand, six hundred twenty-three".