84487001 has 2 divisors, whose sum is σ = 84487002. Its totient is φ = 84487000.

The previous prime is 84486979. The next prime is 84487003. The reversal of 84487001 is 10078448.

84487001 = 6499² + 6500².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 42237001 = 6500^2 + 6499^2 .

It is a cyclic number.

It is not a de Polignac number, because 84487001 - 2¹⁰ = 84485977 is a prime.

Together with 84487003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84487003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42243500 + 42243501.

It is an arithmetic number, because the mean of its divisors is an integer number (42243501).

Almost surely, 2^84487001 is an apocalyptic number.

84487001 is the 6500-th centered square number.

It is an amenable number.

84487001 is a deficient number, since it is larger than the sum of its proper divisors (1).

84487001 is an equidigital number, since it uses as much as digits as its factorization.

84487001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84487001 is about 9191.6810758424. The cubic root of 84487001 is about 438.7966447975.

The spelling of 84487001 in words is "eighty-four million, four hundred eighty-seven thousand, one".