457939 has 4 divisors (see below), whose sum is σ = 473760. Its totient is φ = 442120.

The previous prime is 457913. The next prime is 457943. The reversal of 457939 is 939754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939754 = 2 ⋅469877.

It is a cyclic number.

It is not a de Polignac number, because 457939 - 2¹⁷ = 326867 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 5⁷ + 9 + 7⁶ + 3 + 9 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 457898 and 457907.

It is not an unprimeable number, because it can be changed into a prime (457979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7867 + ... + 7924.

It is an arithmetic number, because the mean of its divisors is an integer number (118440).

2⁴⁵⁷⁹³⁹ is an apocalyptic number.

457939 is a deficient number, since it is larger than the sum of its proper divisors (15821).

457939 is a wasteful number, since it uses less digits than its factorization.

457939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15820.

The product of its digits is 34020, while the sum is 37.

The square root of 457939 is about 676.7119032498. The cubic root of 457939 is about 77.0789654858.

The spelling of 457939 in words is "four hundred fifty-seven thousand, nine hundred thirty-nine".