987444331 has 2 divisors, whose sum is σ = 987444332. Its totient is φ = 987444330.

The previous prime is 987444313. The next prime is 987444347. The reversal of 987444331 is 133444789.

Together with previous prime (987444313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 987444331 - 2⁵ = 987444299 is a prime.

It is a super-2 number, since 2×987444331² = 1950092613648075122, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (987444301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493722165 + 493722166.

It is an arithmetic number, because the mean of its divisors is an integer number (493722166).

Almost surely, 2^987444331 is an apocalyptic number.

987444331 is a deficient number, since it is larger than the sum of its proper divisors (1).

987444331 is an equidigital number, since it uses as much as digits as its factorization.

987444331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 987444331 is about 31423.6269548886. The cubic root of 987444331 is about 995.7971376950.

The spelling of 987444331 in words is "nine hundred eighty-seven million, four hundred forty-four thousand, three hundred thirty-one".