287400959 has 2 divisors, whose sum is σ = 287400960. Its totient is φ = 287400958.

The previous prime is 287400931. The next prime is 287400961. The reversal of 287400959 is 959004782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 287400959 - 2²⁸ = 18965503 is a prime.

It is a super-2 number, since 2×287400959² = 165198622468239362, which contains 22 as substring.

Together with 287400961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287400259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143700479 + 143700480.

It is an arithmetic number, because the mean of its divisors is an integer number (143700480).

Almost surely, 2^287400959 is an apocalyptic number.

287400959 is a deficient number, since it is larger than the sum of its proper divisors (1).

287400959 is an equidigital number, since it uses as much as digits as its factorization.

287400959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 287400959 is about 16952.9041464877. The cubic root of 287400959 is about 659.9272639464.

The spelling of 287400959 in words is "two hundred eighty-seven million, four hundred thousand, nine hundred fifty-nine".