987880739 has 2 divisors, whose sum is σ = 987880740. Its totient is φ = 987880738.

The previous prime is 987880721. The next prime is 987880741. The reversal of 987880739 is 937088789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 987880739 - 2²⁸ = 719445283 is a prime.

It is a super-2 number, since 2×987880739² = 1951816708974372242, which contains 22 as substring.

Together with 987880741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (987880769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493940369 + 493940370.

It is an arithmetic number, because the mean of its divisors is an integer number (493940370).

Almost surely, 2^987880739 is an apocalyptic number.

987880739 is a deficient number, since it is larger than the sum of its proper divisors (1).

987880739 is an equidigital number, since it uses as much as digits as its factorization.

987880739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 987880739 is about 31430.5701348226. The cubic root of 987880739 is about 995.9438159492.

The spelling of 987880739 in words is "nine hundred eighty-seven million, eight hundred eighty thousand, seven hundred thirty-nine".