4280306986421 has 2 divisors, whose sum is σ = 4280306986422. Its totient is φ = 4280306986420.

The previous prime is 4280306986363. The next prime is 4280306986429. The reversal of 4280306986421 is 1246896030824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3652589880625 + 627717105796 = 1911175^2 + 792286^2 .

It is a cyclic number.

It is not a de Polignac number, because 4280306986421 - 2³⁰ = 4279233244597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4280306986429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140153493210 + 2140153493211.

It is an arithmetic number, because the mean of its divisors is an integer number (2140153493211).

Almost surely, 2^{4280306986421} is an apocalyptic number.

It is an amenable number.

4280306986421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4280306986421 is an equidigital number, since it uses as much as digits as its factorization.

4280306986421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 4280306986421 in words is "four trillion, two hundred eighty billion, three hundred six million, nine hundred eighty-six thousand, four hundred twenty-one".