287970089979 has 48 divisors (see below), whose sum is σ = 458673908000. Its totient is φ = 159623861760.

The previous prime is 287970089963. The next prime is 287970090011. The reversal of 287970089979 is 979980079782.

It is not a de Polignac number, because 287970089979 - 2⁴ = 287970089963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287970089979.

It is not an unprimeable number, because it can be changed into a prime (287970089779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 234447 + ... + 794295.

Almost surely, 2^287970089979 is an apocalyptic number.

287970089979 is a deficient number, since it is larger than the sum of its proper divisors (170703818021).

287970089979 is a wasteful number, since it uses less digits than its factorization.

287970089979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559996 (or 559985 counting only the distinct ones).

The product of its (nonzero) digits is 288054144, while the sum is 75.

The spelling of 287970089979 in words is "two hundred eighty-seven billion, nine hundred seventy million, eighty-nine thousand, nine hundred seventy-nine".