84699487 has 2 divisors, whose sum is σ = 84699488. Its totient is φ = 84699486.

The previous prime is 84699479. The next prime is 84699539. The reversal of 84699487 is 78499648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84699487 - 2³ = 84699479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84699427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349743 + 42349744.

It is an arithmetic number, because the mean of its divisors is an integer number (42349744).

Almost surely, 2^84699487 is an apocalyptic number.

84699487 is a deficient number, since it is larger than the sum of its proper divisors (1).

84699487 is an equidigital number, since it uses as much as digits as its factorization.

84699487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 84699487 is about 9203.2324212746. The cubic root of 84699487 is about 439.1641967551.

It can be divided in two parts, 8469 and 9487, that added together give a square (17956 = 134²).

The spelling of 84699487 in words is "eighty-four million, six hundred ninety-nine thousand, four hundred eighty-seven".