57429239 has 4 divisors (see below), whose sum is σ = 65633424. Its totient is φ = 49225056.

The previous prime is 57429161. The next prime is 57429257. The reversal of 57429239 is 93292475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57429239 - 2¹⁶ = 57363703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57429196 and 57429205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57429259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4102082 + ... + 4102095.

It is an arithmetic number, because the mean of its divisors is an integer number (16408356).

Almost surely, 2^57429239 is an apocalyptic number.

57429239 is a deficient number, since it is larger than the sum of its proper divisors (8204185).

57429239 is an equidigital number, since it uses as much as digits as its factorization.

57429239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8204184.

The product of its digits is 136080, while the sum is 41.

The square root of 57429239 is about 7578.2081655230. The cubic root of 57429239 is about 385.8137373511.

The spelling of 57429239 in words is "fifty-seven million, four hundred twenty-nine thousand, two hundred thirty-nine".