84007487 has 4 divisors (see below), whose sum is σ = 84109896. Its totient is φ = 83905080.

The previous prime is 84007463. The next prime is 84007507. The reversal of 84007487 is 78470048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84007487 - 2¹⁰ = 84006463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84007487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84007447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49964 + ... + 51617.

It is an arithmetic number, because the mean of its divisors is an integer number (21027474).

Almost surely, 2^84007487 is an apocalyptic number.

84007487 is a deficient number, since it is larger than the sum of its proper divisors (102409).

84007487 is a wasteful number, since it uses less digits than its factorization.

84007487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102408.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 84007487 is about 9165.5598301468. The cubic root of 84007487 is about 437.9649252926.

The spelling of 84007487 in words is "eighty-four million, seven thousand, four hundred eighty-seven".