57478439 has 8 divisors (see below), whose sum is σ = 60675840. Its totient is φ = 54298296.

The previous prime is 57478423. The next prime is 57478441. The reversal of 57478439 is 93487475.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57478439 - 2⁴ = 57478423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57478393 and 57478402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57478459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2852 + ... + 11094.

It is an arithmetic number, because the mean of its divisors is an integer number (7584480).

Almost surely, 2^57478439 is an apocalyptic number.

57478439 is a deficient number, since it is larger than the sum of its proper divisors (3197401).

57478439 is a wasteful number, since it uses less digits than its factorization.

57478439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8629.

The product of its digits is 846720, while the sum is 47.

The square root of 57478439 is about 7581.4536205137. The cubic root of 57478439 is about 385.9238822767.

The spelling of 57478439 in words is "fifty-seven million, four hundred seventy-eight thousand, four hundred thirty-nine".