402111289 has 2 divisors, whose sum is σ = 402111290. Its totient is φ = 402111288.

The previous prime is 402111253. The next prime is 402111299. The reversal of 402111289 is 982111204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 182034064 = 14835^2 + 13492^2 .

It is a cyclic number.

It is not a de Polignac number, because 402111289 - 2¹⁹ = 401587001 is a prime.

It is not a weakly prime, because it can be changed into another prime (402111209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201055644 + 201055645.

It is an arithmetic number, because the mean of its divisors is an integer number (201055645).

Almost surely, 2^402111289 is an apocalyptic number.

It is an amenable number.

402111289 is a deficient number, since it is larger than the sum of its proper divisors (1).

402111289 is an equidigital number, since it uses as much as digits as its factorization.

402111289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 402111289 is about 20052.7127591256. The cubic root of 402111289 is about 738.1003681277.

The spelling of 402111289 in words is "four hundred two million, one hundred eleven thousand, two hundred eighty-nine".