987449427 has 32 divisors (see below), whose sum is σ = 1493002560. Its totient is φ = 644889600.

The previous prime is 987449387. The next prime is 987449503. The reversal of 987449427 is 724944789.

It is a happy number.

It is not a de Polignac number, because 987449427 - 2¹⁹ = 986925139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987444427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262653 + ... + 266385.

It is an arithmetic number, because the mean of its divisors is an integer number (46656330).

Almost surely, 2^987449427 is an apocalyptic number.

987449427 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

987449427 is a deficient number, since it is larger than the sum of its proper divisors (505553133).

987449427 is a wasteful number, since it uses less digits than its factorization.

987449427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3934 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 987449427 is about 31423.7080402679. The cubic root of 987449427 is about 995.7988507277.

The spelling of 987449427 in words is "nine hundred eighty-seven million, four hundred forty-nine thousand, four hundred twenty-seven".