287401487 has 2 divisors, whose sum is σ = 287401488. Its totient is φ = 287401486.

The previous prime is 287401469. The next prime is 287401501. The reversal of 287401487 is 784104782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287401487 is a prime.

It is a super-2 number, since 2×287401487² = 165199229459622338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287401187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143700743 + 143700744.

It is an arithmetic number, because the mean of its divisors is an integer number (143700744).

Almost surely, 2^287401487 is an apocalyptic number.

287401487 is a deficient number, since it is larger than the sum of its proper divisors (1).

287401487 is an equidigital number, since it uses as much as digits as its factorization.

287401487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 287401487 is about 16952.9197190337. The cubic root of 287401487 is about 659.9276680756.

The spelling of 287401487 in words is "two hundred eighty-seven million, four hundred one thousand, four hundred eighty-seven".