420633089 has 2 divisors, whose sum is σ = 420633090. Its totient is φ = 420633088.

The previous prime is 420633067. The next prime is 420633097. The reversal of 420633089 is 980336024.

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., 418407025 + 2226064 = 20455^2 + 1492^2 .

It is a cyclic number.

It is not a de Polignac number, because 420633089 - 2²⁰ = 419584513 is a prime.

It is not a weakly prime, because it can be changed into another prime (420633049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210316544 + 210316545.

It is an arithmetic number, because the mean of its divisors is an integer number (210316545).

Almost surely, 2^420633089 is an apocalyptic number.

It is an amenable number.

420633089 is a deficient number, since it is larger than the sum of its proper divisors (1).

420633089 is an equidigital number, since it uses as much as digits as its factorization.

420633089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 420633089 is about 20509.3415057627. The cubic root of 420633089 is about 749.2633293995.

The spelling of 420633089 in words is "four hundred twenty million, six hundred thirty-three thousand, eighty-nine".