426855787 has 4 divisors (see below), whose sum is σ = 426983560. Its totient is φ = 426728016.

The previous prime is 426855773. The next prime is 426855829. The reversal of 426855787 is 787558624.

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-426855787 is a prime.

It is a super-3 number, since 3×426855787³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426855757) 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, 58737 + ... + 65602.

It is an arithmetic number, because the mean of its divisors is an integer number (106745890).

Almost surely, 2^426855787 is an apocalyptic number.

426855787 is a deficient number, since it is larger than the sum of its proper divisors (127773).

426855787 is a wasteful number, since it uses less digits than its factorization.

426855787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127772.

The product of its digits is 3763200, while the sum is 52.

The square root of 426855787 is about 20660.4885469826. The cubic root of 426855787 is about 752.9400373292.

The spelling of 426855787 in words is "four hundred twenty-six million, eight hundred fifty-five thousand, seven hundred eighty-seven".