426998731 has 4 divisors (see below), whose sum is σ = 427081464. Its totient is φ = 426916000.

The previous prime is 426998717. The next prime is 426998821. The reversal of 426998731 is 137899624.

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 426998731 - 2⁷ = 426998603 is a prime.

It is a super-2 number, since 2×426998731² = 364655832551220722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426998701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33070 + ... + 44131.

It is an arithmetic number, because the mean of its divisors is an integer number (106770366).

Almost surely, 2^426998731 is an apocalyptic number.

426998731 is a deficient number, since it is larger than the sum of its proper divisors (82733).

426998731 is an equidigital number, since it uses as much as digits as its factorization.

426998731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82732.

The product of its digits is 653184, while the sum is 49.

The square root of 426998731 is about 20663.9476141419. The cubic root of 426998731 is about 753.0240752737.

The spelling of 426998731 in words is "four hundred twenty-six million, nine hundred ninety-eight thousand, seven hundred thirty-one".