420883777 has 2 divisors, whose sum is σ = 420883778. Its totient is φ = 420883776.

The previous prime is 420883711. The next prime is 420883783. The reversal of 420883777 is 777388024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282374416 + 138509361 = 16804^2 + 11769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420883777 is a prime.

It is not a weakly prime, because it can be changed into another prime (420880777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210441888 + 210441889.

It is an arithmetic number, because the mean of its divisors is an integer number (210441889).

Almost surely, 2^420883777 is an apocalyptic number.

It is an amenable number.

420883777 is a deficient number, since it is larger than the sum of its proper divisors (1).

420883777 is an equidigital number, since it uses as much as digits as its factorization.

420883777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The square root of 420883777 is about 20515.4521519756. The cubic root of 420883777 is about 749.4121479529.

The spelling of 420883777 in words is "four hundred twenty million, eight hundred eighty-three thousand, seven hundred seventy-seven".