426747623 has 4 divisors (see below), whose sum is σ = 426791880. Its totient is φ = 426703368.

The previous prime is 426747599. The next prime is 426747637. The reversal of 426747623 is 326747624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 426747623 - 2¹⁰ = 426746599 is a prime.

It is a super-2 number, since 2×426747623² = 364227067472300258, 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 (426744623) 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, 833 + ... + 29226.

It is an arithmetic number, because the mean of its divisors is an integer number (106697970).

Almost surely, 2^426747623 is an apocalyptic number.

426747623 is a deficient number, since it is larger than the sum of its proper divisors (44257).

426747623 is a wasteful number, since it uses less digits than its factorization.

426747623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44256.

The product of its digits is 338688, while the sum is 41.

The square root of 426747623 is about 20657.8707276428. The cubic root of 426747623 is about 752.8764343602.

Subtracting from 426747623 its reverse (326747624), we obtain a palindrome (99999999).

The spelling of 426747623 in words is "four hundred twenty-six million, seven hundred forty-seven thousand, six hundred twenty-three".