220408933 has 2 divisors, whose sum is σ = 220408934. Its totient is φ = 220408932.

The previous prime is 220408901. The next prime is 220408943. The reversal of 220408933 is 339804022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154181889 + 66227044 = 12417^2 + 8138^2 .

It is a cyclic number.

It is not a de Polignac number, because 220408933 - 2⁵ = 220408901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220408895 and 220408904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220408943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110204466 + 110204467.

It is an arithmetic number, because the mean of its divisors is an integer number (110204467).

Almost surely, 2^220408933 is an apocalyptic number.

It is an amenable number.

220408933 is a deficient number, since it is larger than the sum of its proper divisors (1).

220408933 is an equidigital number, since it uses as much as digits as its factorization.

220408933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 220408933 is about 14846.1757028536. The cubic root of 220408933 is about 604.0548802158.

The spelling of 220408933 in words is "two hundred twenty million, four hundred eight thousand, nine hundred thirty-three".