426877819 has 4 divisors (see below), whose sum is σ = 429596944. Its totient is φ = 424158696.

The previous prime is 426877783. The next prime is 426877831. The reversal of 426877819 is 918778624.

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 426877819 - 2¹⁹ = 426353531 is a prime.

It is a super-3 number, since 3×426877819³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426877849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1359327 + ... + 1359640.

It is an arithmetic number, because the mean of its divisors is an integer number (107399236).

Almost surely, 2^426877819 is an apocalyptic number.

426877819 is a deficient number, since it is larger than the sum of its proper divisors (2719125).

426877819 is a wasteful number, since it uses less digits than its factorization.

426877819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719124.

The product of its digits is 1354752, while the sum is 52.

The square root of 426877819 is about 20661.0217317537. The cubic root of 426877819 is about 752.9529913447.

The spelling of 426877819 in words is "four hundred twenty-six million, eight hundred seventy-seven thousand, eight hundred nineteen".