420022309 has 16 divisors (see below), whose sum is σ = 483994368. Its totient is φ = 357057792.

The previous prime is 420022289. The next prime is 420022313. The reversal of 420022309 is 903220024.

It is not a de Polignac number, because 420022309 - 2⁷ = 420022181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420022309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420022609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620079 + ... + 620755.

It is an arithmetic number, because the mean of its divisors is an integer number (30249648).

Almost surely, 2^420022309 is an apocalyptic number.

It is an amenable number.

420022309 is a deficient number, since it is larger than the sum of its proper divisors (63972059).

420022309 is a wasteful number, since it uses less digits than its factorization.

420022309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 420022309 is about 20494.4458085599. The cubic root of 420022309 is about 748.9004979517.

The spelling of 420022309 in words is "four hundred twenty million, twenty-two thousand, three hundred nine".