426743739 has 24 divisors (see below), whose sum is σ = 641118192. Its totient is φ = 273309120.

The previous prime is 426743719. The next prime is 426743747. The reversal of 426743739 is 937347624.

It is a de Polignac number, because none of the positive numbers 2^k-426743739 is a prime.

It is a super-2 number, since 2×426743739² = 364220437551400242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 426743694 and 426743703.

It is not an unprimeable number, because it can be changed into a prime (426743719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14569 + ... + 32645.

It is an arithmetic number, because the mean of its divisors is an integer number (26713258).

Almost surely, 2^426743739 is an apocalyptic number.

426743739 is a deficient number, since it is larger than the sum of its proper divisors (214374453).

426743739 is a wasteful number, since it uses less digits than its factorization.

426743739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187 (or 18184 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 426743739 is about 20657.7767196763. The cubic root of 426743739 is about 752.8741502772.

The spelling of 426743739 in words is "four hundred twenty-six million, seven hundred forty-three thousand, seven hundred thirty-nine".