402602869 has 2 divisors, whose sum is σ = 402602870. Its totient is φ = 402602868.

The previous prime is 402602819. The next prime is 402602897. The reversal of 402602869 is 968206204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402483844 + 119025 = 20062^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 402602869 - 2⁹ = 402602357 is a prime.

It is a super-2 number, since 2×402602869² = 324178140254062322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402602819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201301434 + 201301435.

It is an arithmetic number, because the mean of its divisors is an integer number (201301435).

Almost surely, 2^402602869 is an apocalyptic number.

It is an amenable number.

402602869 is a deficient number, since it is larger than the sum of its proper divisors (1).

402602869 is an equidigital number, since it uses as much as digits as its factorization.

402602869 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 402602869 is about 20064.9662097896. The cubic root of 402602869 is about 738.4010209023.

The spelling of 402602869 in words is "four hundred two million, six hundred two thousand, eight hundred sixty-nine".