987848749 has 2 divisors, whose sum is σ = 987848750. Its totient is φ = 987848748.

The previous prime is 987848731. The next prime is 987848789. The reversal of 987848749 is 947848789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558613225 + 429235524 = 23635^2 + 20718^2 .

It is a cyclic number.

It is not a de Polignac number, because 987848749 - 2¹⁵ = 987815981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987848789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493924374 + 493924375.

It is an arithmetic number, because the mean of its divisors is an integer number (493924375).

Almost surely, 2^987848749 is an apocalyptic number.

It is an amenable number.

987848749 is a deficient number, since it is larger than the sum of its proper divisors (1).

987848749 is an equidigital number, since it uses as much as digits as its factorization.

987848749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 64.

The square root of 987848749 is about 31430.0612312480. The cubic root of 987848749 is about 995.9330654658.

The spelling of 987848749 in words is "nine hundred eighty-seven million, eight hundred forty-eight thousand, seven hundred forty-nine".