426782981 has 8 divisors (see below), whose sum is σ = 437488128. Its totient is φ = 416092000.

The previous prime is 426782969. The next prime is 426783047. The reversal of 426782981 is 189287624.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426782981 - 2¹⁴ = 426766597 is a prime.

It is a super-2 number, since 2×426782981² = 364287425742492722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426782281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84086 + ... + 89016.

It is an arithmetic number, because the mean of its divisors is an integer number (54686016).

Almost surely, 2^426782981 is an apocalyptic number.

426782981 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

426782981 is a deficient number, since it is larger than the sum of its proper divisors (10705147).

426782981 is a wasteful number, since it uses less digits than its factorization.

426782981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083.

The product of its digits is 387072, while the sum is 47.

The square root of 426782981 is about 20658.7265096375. The cubic root of 426782981 is about 752.8972268758.

The spelling of 426782981 in words is "four hundred twenty-six million, seven hundred eighty-two thousand, nine hundred eighty-one".