495421919 has 4 divisors (see below), whose sum is σ = 502816344. Its totient is φ = 488027496.

The previous prime is 495421891. The next prime is 495421921. The reversal of 495421919 is 919124594.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495421919 is a prime.

It is a super-2 number, since 2×495421919² = 490885755651285122, which contains 22 as substring.

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 495421919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495421319) 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, 3697112 + ... + 3697245.

It is an arithmetic number, because the mean of its divisors is an integer number (125704086).

Almost surely, 2^495421919 is an apocalyptic number.

495421919 is a deficient number, since it is larger than the sum of its proper divisors (7394425).

495421919 is an equidigital number, since it uses as much as digits as its factorization.

495421919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7394424.

The product of its digits is 116640, while the sum is 44.

The square root of 495421919 is about 22258.0753660329. The cubic root of 495421919 is about 791.2706779326.

The spelling of 495421919 in words is "four hundred ninety-five million, four hundred twenty-one thousand, nine hundred nineteen".