420088549 has 2 divisors, whose sum is σ = 420088550. Its totient is φ = 420088548.

The previous prime is 420088541. The next prime is 420088597. The reversal of 420088549 is 945880024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390852900 + 29235649 = 19770^2 + 5407^2 .

It is a cyclic number.

It is not a de Polignac number, because 420088549 - 2³ = 420088541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420088541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210044274 + 210044275.

It is an arithmetic number, because the mean of its divisors is an integer number (210044275).

Almost surely, 2^420088549 is an apocalyptic number.

It is an amenable number.

420088549 is a deficient number, since it is larger than the sum of its proper divisors (1).

420088549 is an equidigital number, since it uses as much as digits as its factorization.

420088549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 420088549 is about 20496.0617924517. The cubic root of 420088549 is about 748.9398645602.

The spelling of 420088549 in words is "four hundred twenty million, eighty-eight thousand, five hundred forty-nine".