402682069 has 2 divisors, whose sum is σ = 402682070. Its totient is φ = 402682068.

The previous prime is 402682019. The next prime is 402682087. The reversal of 402682069 is 960286204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319051044 + 83631025 = 17862^2 + 9145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402682069 is a prime.

It is a super-2 number, since 2×402682069² = 324305697388241522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402682019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201341034 + 201341035.

It is an arithmetic number, because the mean of its divisors is an integer number (201341035).

Almost surely, 2^402682069 is an apocalyptic number.

It is an amenable number.

402682069 is a deficient number, since it is larger than the sum of its proper divisors (1).

402682069 is an equidigital number, since it uses as much as digits as its factorization.

402682069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 402682069 is about 20066.9397019077. The cubic root of 402682069 is about 738.4494371217.

The spelling of 402682069 in words is "four hundred two million, six hundred eighty-two thousand, sixty-nine".