426679961 has 4 divisors (see below), whose sum is σ = 428890932. Its totient is φ = 424468992.

The previous prime is 426679951. The next prime is 426680003. The reversal of 426679961 is 169976624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160174336 + 266505625 = 12656^2 + 16325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426679961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426679901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105196 + ... + 1105581.

It is an arithmetic number, because the mean of its divisors is an integer number (107222733).

Almost surely, 2^426679961 is an apocalyptic number.

It is an amenable number.

426679961 is a deficient number, since it is larger than the sum of its proper divisors (2210971).

426679961 is a wasteful number, since it uses less digits than its factorization.

426679961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210970.

The product of its digits is 979776, while the sum is 50.

The square root of 426679961 is about 20656.2329818387. The cubic root of 426679961 is about 752.8366420528.

The spelling of 426679961 in words is "four hundred twenty-six million, six hundred seventy-nine thousand, nine hundred sixty-one".