455218379 has 18 divisors (see below), whose sum is σ = 578309004. Its totient is φ = 354329640.

The previous prime is 455218373. The next prime is 455218399. The reversal of 455218379 is 973812554.

It is a de Polignac number, because none of the positive numbers 2^k-455218379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (455218373) 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 17 ways as a sum of consecutive naturals, for example, 494882 + ... + 495800.

It is an arithmetic number, because the mean of its divisors is an integer number (32128278).

Almost surely, 2^455218379 is an apocalyptic number.

455218379 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

455218379 is a deficient number, since it is larger than the sum of its proper divisors (123090625).

455218379 is an frugal number, since it uses more digits than its factorization.

455218379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863 (or 937 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 455218379 is about 21335.8472763563. The cubic root of 455218379 is about 769.2601985313.

Multiplying 455218379 by its sum of digits (44), we get a square (20029608676 = 141526²).

The spelling of 455218379 in words is "four hundred fifty-five million, two hundred eighteen thousand, three hundred seventy-nine".