57982409 has 4 divisors (see below), whose sum is σ = 58039680. Its totient is φ = 57925140.

The previous prime is 57982399. The next prime is 57982439. The reversal of 57982409 is 90428975.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57982409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57982409.

It is not an unprimeable number, because it can be changed into a prime (57982439) 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, 27089 + ... + 29150.

It is an arithmetic number, because the mean of its divisors is an integer number (14509920).

Almost surely, 2^57982409 is an apocalyptic number.

It is an amenable number.

57982409 is a deficient number, since it is larger than the sum of its proper divisors (57271).

57982409 is a wasteful number, since it uses less digits than its factorization.

57982409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57270.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 57982409 is about 7614.6181125517. The cubic root of 57982409 is about 387.0485264328.

The spelling of 57982409 in words is "fifty-seven million, nine hundred eighty-two thousand, four hundred nine".