287427949 has 2 divisors, whose sum is σ = 287427950. Its totient is φ = 287427948.

The previous prime is 287427929. The next prime is 287428007. The reversal of 287427949 is 949724782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177555625 + 109872324 = 13325^2 + 10482^2 .

It is a cyclic number.

It is not a de Polignac number, because 287427949 - 2¹³ = 287419757 is a prime.

It is a super-2 number, since 2×287427949² = 165229651732693202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287427896 and 287427905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287427919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143713974 + 143713975.

It is an arithmetic number, because the mean of its divisors is an integer number (143713975).

Almost surely, 2^287427949 is an apocalyptic number.

It is an amenable number.

287427949 is a deficient number, since it is larger than the sum of its proper divisors (1).

287427949 is an equidigital number, since it uses as much as digits as its factorization.

287427949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 287427949 is about 16953.7001566030. The cubic root of 287427949 is about 659.9479213575.

The spelling of 287427949 in words is "two hundred eighty-seven million, four hundred twenty-seven thousand, nine hundred forty-nine".