455091919 has 4 divisors (see below), whose sum is σ = 465675496. Its totient is φ = 444508344.

The previous prime is 455091913. The next prime is 455091947. The reversal of 455091919 is 919190554.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 455091919 - 2³ = 455091911 is a prime.

It is a super-2 number, since 2×455091919² = 414217309478205122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 10583533 = 455091919 / (4 + 5 + 5 + 0 + 9 + 1 + 9 + 1 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455091911) 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, 5291724 + ... + 5291809.

It is an arithmetic number, because the mean of its divisors is an integer number (116418874).

Almost surely, 2^455091919 is an apocalyptic number.

455091919 is a deficient number, since it is larger than the sum of its proper divisors (10583577).

455091919 is a wasteful number, since it uses less digits than its factorization.

455091919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583576.

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 455091919 is about 21332.8835134869. The cubic root of 455091919 is about 769.1889582513.

It can be divided in two parts, 4550 and 91919, that added together give a palindrome (96469).

The spelling of 455091919 in words is "four hundred fifty-five million, ninety-one thousand, nine hundred nineteen".