402220773 has 6 divisors (see below), whose sum is σ = 580985574. Its totient is φ = 268147176.

The previous prime is 402220771. The next prime is 402220829. The reversal of 402220773 is 377022204.

It can be written as a sum of positive squares in only one way, i.e., 284866884 + 117353889 = 16878^2 + 10833^2 .

It is not a de Polignac number, because 402220773 - 2¹ = 402220771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402220771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22345590 + ... + 22345607.

It is an arithmetic number, because the mean of its divisors is an integer number (96830929).

Almost surely, 2^402220773 is an apocalyptic number.

It is an amenable number.

402220773 is a deficient number, since it is larger than the sum of its proper divisors (178764801).

402220773 is a wasteful number, since it uses less digits than its factorization.

402220773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44691203 (or 44691200 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 402220773 is about 20055.4424782900. The cubic root of 402220773 is about 738.1673502874.

Adding to 402220773 its reverse (377022204), we get a palindrome (779242977).

The spelling of 402220773 in words is "four hundred two million, two hundred twenty thousand, seven hundred seventy-three".