487890945 has 20 divisors (see below), whose sum is σ = 874590420. Its totient is φ = 260208288.

The previous prime is 487890937. The next prime is 487890979. The reversal of 487890945 is 549098784.

It can be written as a sum of positive squares in 2 ways, for example, as 75272976 + 412617969 = 8676^2 + 20313^2 .

It is not a de Polignac number, because 487890945 - 2³ = 487890937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 487890891 and 487890900.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 601930 + ... + 602739.

It is an arithmetic number, because the mean of its divisors is an integer number (43729521).

Almost surely, 2^487890945 is an apocalyptic number.

487890945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

487890945 is a deficient number, since it is larger than the sum of its proper divisors (386699475).

487890945 is a wasteful number, since it uses less digits than its factorization.

487890945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204686 (or 1204677 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 487890945 is about 22088.2535525107. The cubic root of 487890945 is about 787.2407854342.

The spelling of 487890945 in words is "four hundred eighty-seven million, eight hundred ninety thousand, nine hundred forty-five".