987951329 has 2 divisors, whose sum is σ = 987951330. Its totient is φ = 987951328.

The previous prime is 987951281. The next prime is 987951373. The reversal of 987951329 is 923159789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 934952929 + 52998400 = 30577^2 + 7280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987951329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (987951529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493975664 + 493975665.

It is an arithmetic number, because the mean of its divisors is an integer number (493975665).

Almost surely, 2^987951329 is an apocalyptic number.

It is an amenable number.

987951329 is a deficient number, since it is larger than the sum of its proper divisors (1).

987951329 is an equidigital number, since it uses as much as digits as its factorization.

987951329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 53.

The square root of 987951329 is about 31431.6930660758. The cubic root of 987951329 is about 995.9675374360.

The spelling of 987951329 in words is "nine hundred eighty-seven million, nine hundred fifty-one thousand, three hundred twenty-nine".