426994679 has 4 divisors (see below), whose sum is σ = 431396784. Its totient is φ = 422592576.

The previous prime is 426994649. The next prime is 426994691. The reversal of 426994679 is 976499624.

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-426994679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426994649) 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, 2200907 + ... + 2201100.

It is an arithmetic number, because the mean of its divisors is an integer number (107849196).

Almost surely, 2^426994679 is an apocalyptic number.

426994679 is a deficient number, since it is larger than the sum of its proper divisors (4402105).

426994679 is an equidigital number, since it uses as much as digits as its factorization.

426994679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402104.

The product of its digits is 5878656, while the sum is 56.

The square root of 426994679 is about 20663.8495687517. The cubic root of 426994679 is about 753.0216933282.

The spelling of 426994679 in words is "four hundred twenty-six million, nine hundred ninety-four thousand, six hundred seventy-nine".