455708389 has 4 divisors (see below), whose sum is σ = 463432320. Its totient is φ = 447984460.

The previous prime is 455708371. The next prime is 455708411. The reversal of 455708389 is 983807554.

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: 983807554 = 2 ⋅491903777.

It is a cyclic number.

It is not a de Polignac number, because 455708389 - 2¹¹ = 455706341 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455708189) 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, 3861877 + ... + 3861994.

It is an arithmetic number, because the mean of its divisors is an integer number (115858080).

Almost surely, 2^455708389 is an apocalyptic number.

It is an amenable number.

455708389 is a deficient number, since it is larger than the sum of its proper divisors (7723931).

455708389 is an equidigital number, since it uses as much as digits as its factorization.

455708389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723930.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 455708389 is about 21347.3274439682. The cubic root of 455708389 is about 769.5361173991.

The spelling of 455708389 in words is "four hundred fifty-five million, seven hundred eight thousand, three hundred eighty-nine".