47724739 has 2 divisors, whose sum is σ = 47724740. Its totient is φ = 47724738.

The previous prime is 47724727. The next prime is 47724757. The reversal of 47724739 is 93742774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47724739 - 2¹¹ = 47722691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47724695 and 47724704.

It is not a weakly prime, because it can be changed into another prime (47724799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23862369 + 23862370.

It is an arithmetic number, because the mean of its divisors is an integer number (23862370).

Almost surely, 2^47724739 is an apocalyptic number.

47724739 is a deficient number, since it is larger than the sum of its proper divisors (1).

47724739 is an equidigital number, since it uses as much as digits as its factorization.

47724739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 47724739 is about 6908.3094169268. The cubic root of 47724739 is about 362.7280885590.

The spelling of 47724739 in words is "forty-seven million, seven hundred twenty-four thousand, seven hundred thirty-nine".