402514109 has 2 divisors, whose sum is σ = 402514110. Its totient is φ = 402514108.

The previous prime is 402514087. The next prime is 402514111. The reversal of 402514109 is 901415204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201725209 + 200788900 = 14203^2 + 14170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402514109 is a prime.

It is a Sophie Germain prime.

Together with 402514111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402514129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201257054 + 201257055.

It is an arithmetic number, because the mean of its divisors is an integer number (201257055).

Almost surely, 2^402514109 is an apocalyptic number.

It is an amenable number.

402514109 is a deficient number, since it is larger than the sum of its proper divisors (1).

402514109 is an equidigital number, since it uses as much as digits as its factorization.

402514109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 402514109 is about 20062.7542725320. The cubic root of 402514109 is about 738.3467529568.

The spelling of 402514109 in words is "four hundred two million, five hundred fourteen thousand, one hundred nine".