402490005289 has 2 divisors, whose sum is σ = 402490005290. Its totient is φ = 402490005288.

The previous prime is 402490005221. The next prime is 402490005319. The reversal of 402490005289 is 982500094204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363084579225 + 39405426064 = 602565^2 + 198508^2 .

It is a cyclic number.

It is not a de Polignac number, because 402490005289 - 2¹³ = 402489997097 is a prime.

It is not a weakly prime, because it can be changed into another prime (402490005689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201245002644 + 201245002645.

It is an arithmetic number, because the mean of its divisors is an integer number (201245002645).

Almost surely, 2^402490005289 is an apocalyptic number.

It is an amenable number.

402490005289 is a deficient number, since it is larger than the sum of its proper divisors (1).

402490005289 is an equidigital number, since it uses as much as digits as its factorization.

402490005289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 402490005289 in words is "four hundred two billion, four hundred ninety million, five thousand, two hundred eighty-nine".