420796417 has 2 divisors, whose sum is σ = 420796418. Its totient is φ = 420796416.

The previous prime is 420796367. The next prime is 420796429. The reversal of 420796417 is 714697024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387341761 + 33454656 = 19681^2 + 5784^2 .

It is a cyclic number.

It is not a de Polignac number, because 420796417 - 2⁷ = 420796289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420796417.

It is not a weakly prime, because it can be changed into another prime (420796447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210398208 + 210398209.

It is an arithmetic number, because the mean of its divisors is an integer number (210398209).

Almost surely, 2^420796417 is an apocalyptic number.

It is an amenable number.

420796417 is a deficient number, since it is larger than the sum of its proper divisors (1).

420796417 is an equidigital number, since it uses as much as digits as its factorization.

420796417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 420796417 is about 20513.3229146328. The cubic root of 420796417 is about 749.3602942275.

The spelling of 420796417 in words is "four hundred twenty million, seven hundred ninety-six thousand, four hundred seventeen".