457678549 has 4 divisors (see below), whose sum is σ = 458184064. Its totient is φ = 457173036.

The previous prime is 457678523. The next prime is 457678553. The reversal of 457678549 is 945876754.

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, and also an emirpimes, since its reverse is a distinct semiprime: 945876754 = 2 ⋅472938377.

It is a cyclic number.

It is not a de Polignac number, because 457678549 - 2⁹ = 457678037 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 457678549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457678519) 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, 251397 + ... + 253210.

It is an arithmetic number, because the mean of its divisors is an integer number (114546016).

Almost surely, 2^457678549 is an apocalyptic number.

It is an amenable number.

457678549 is a deficient number, since it is larger than the sum of its proper divisors (505515).

457678549 is an equidigital number, since it uses as much as digits as its factorization.

457678549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505514.

The product of its digits is 8467200, while the sum is 55.

The square root of 457678549 is about 21393.4230313898. The cubic root of 457678549 is about 770.6434992874.

The spelling of 457678549 in words is "four hundred fifty-seven million, six hundred seventy-eight thousand, five hundred forty-nine".