457284749 has 2 divisors, whose sum is σ = 457284750. Its totient is φ = 457284748.

The previous prime is 457284733. The next prime is 457284787. The reversal of 457284749 is 947482754.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396288649 + 60996100 = 19907^2 + 7810^2 .

It is a cyclic number.

It is not a de Polignac number, because 457284749 - 2⁴ = 457284733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 457284697 and 457284706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457284049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228642374 + 228642375.

It is an arithmetic number, because the mean of its divisors is an integer number (228642375).

Almost surely, 2^457284749 is an apocalyptic number.

It is an amenable number.

457284749 is a deficient number, since it is larger than the sum of its proper divisors (1).

457284749 is an equidigital number, since it uses as much as digits as its factorization.

457284749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 50.

The square root of 457284749 is about 21384.2172875231. The cubic root of 457284749 is about 770.4224078007.

The spelling of 457284749 in words is "four hundred fifty-seven million, two hundred eighty-four thousand, seven hundred forty-nine".