402841069 has 2 divisors, whose sum is σ = 402841070. Its totient is φ = 402841068.

The previous prime is 402841039. The next prime is 402841091. The reversal of 402841069 is 960148204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344547844 + 58293225 = 18562^2 + 7635^2 .

It is a cyclic number.

It is not a de Polignac number, because 402841069 - 2⁵ = 402841037 is a prime.

It is a super-2 number, since 2×402841069² = 324561853746125522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402841039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201420534 + 201420535.

It is an arithmetic number, because the mean of its divisors is an integer number (201420535).

Almost surely, 2^402841069 is an apocalyptic number.

It is an amenable number.

402841069 is a deficient number, since it is larger than the sum of its proper divisors (1).

402841069 is an equidigital number, since it uses as much as digits as its factorization.

402841069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 402841069 is about 20070.9010510241. The cubic root of 402841069 is about 738.5466171878.

The spelling of 402841069 in words is "four hundred two million, eight hundred forty-one thousand, sixty-nine".