47724789 has 16 divisors (see below), whose sum is σ = 76551680. Its totient is φ = 25835760.

The previous prime is 47724773. The next prime is 47724799. The reversal of 47724789 is 98742774.

It is not a de Polignac number, because 47724789 - 2⁴ = 47724773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47724739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59407 + ... + 60204.

It is an arithmetic number, because the mean of its divisors is an integer number (4784480).

Almost surely, 2^47724789 is an apocalyptic number.

It is an amenable number.

47724789 is a deficient number, since it is larger than the sum of its proper divisors (28826891).

47724789 is a wasteful number, since it uses less digits than its factorization.

47724789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119640.

The product of its digits is 790272, while the sum is 48.

The square root of 47724789 is about 6908.3130357563. The cubic root of 47724789 is about 362.7282152326.

The spelling of 47724789 in words is "forty-seven million, seven hundred twenty-four thousand, seven hundred eighty-nine".