987872449 has 2 divisors, whose sum is σ = 987872450. Its totient is φ = 987872448.

The previous prime is 987872419. The next prime is 987872467. The reversal of 987872449 is 944278789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602457025 + 385415424 = 24545^2 + 19632^2 .

It is a cyclic number.

It is not a de Polignac number, because 987872449 - 2²⁵ = 954318017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 987872393 and 987872402.

It is not a weakly prime, because it can be changed into another prime (987872419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493936224 + 493936225.

It is an arithmetic number, because the mean of its divisors is an integer number (493936225).

Almost surely, 2^987872449 is an apocalyptic number.

It is an amenable number.

987872449 is a deficient number, since it is larger than the sum of its proper divisors (1).

987872449 is an equidigital number, since it uses as much as digits as its factorization.

987872449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 58.

The square root of 987872449 is about 31430.4382565691. The cubic root of 987872449 is about 995.9410300538.

The spelling of 987872449 in words is "nine hundred eighty-seven million, eight hundred seventy-two thousand, four hundred forty-nine".