287949141 has 8 divisors (see below), whose sum is σ = 426591360. Its totient is φ = 191966076.

The previous prime is 287949127. The next prime is 287949163. The reversal of 287949141 is 141949782.

It is a happy number.

It is not a de Polignac number, because 287949141 - 2¹⁰ = 287948117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287949241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5332365 + ... + 5332418.

It is an arithmetic number, because the mean of its divisors is an integer number (53323920).

Almost surely, 2^287949141 is an apocalyptic number.

It is an amenable number.

287949141 is a deficient number, since it is larger than the sum of its proper divisors (138642219).

287949141 is a wasteful number, since it uses less digits than its factorization.

287949141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664792 (or 10664786 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 287949141 is about 16969.0642346595. The cubic root of 287949141 is about 660.3465741761.

The spelling of 287949141 in words is "two hundred eighty-seven million, nine hundred forty-nine thousand, one hundred forty-one".