426008621 has 2 divisors, whose sum is σ = 426008622. Its totient is φ = 426008620.

The previous prime is 426008617. The next prime is 426008651. The reversal of 426008621 is 126800624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389272900 + 36735721 = 19730^2 + 6061^2 .

It is a cyclic number.

It is not a de Polignac number, because 426008621 - 2² = 426008617 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426008651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213004310 + 213004311.

It is an arithmetic number, because the mean of its divisors is an integer number (213004311).

Almost surely, 2^426008621 is an apocalyptic number.

It is an amenable number.

426008621 is a deficient number, since it is larger than the sum of its proper divisors (1).

426008621 is an equidigital number, since it uses as much as digits as its factorization.

426008621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 426008621 is about 20639.9762839011. The cubic root of 426008621 is about 752.4415960382.

The spelling of 426008621 in words is "four hundred twenty-six million, eight thousand, six hundred twenty-one".