987404269 has 2 divisors, whose sum is σ = 987404270. Its totient is φ = 987404268.

The previous prime is 987404213. The next prime is 987404273. The reversal of 987404269 is 962404789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954192100 + 33212169 = 30890^2 + 5763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987404269 is a prime.

It is a super-2 number, since 2×987404269² = 1949934380878848722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987404569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493702134 + 493702135.

It is an arithmetic number, because the mean of its divisors is an integer number (493702135).

Almost surely, 2^987404269 is an apocalyptic number.

It is an amenable number.

987404269 is a deficient number, since it is larger than the sum of its proper divisors (1).

987404269 is an equidigital number, since it uses as much as digits as its factorization.

987404269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 987404269 is about 31422.9894981366. The cubic root of 987404269 is about 995.7836705512.

The spelling of 987404269 in words is "nine hundred eighty-seven million, four hundred four thousand, two hundred sixty-nine".