84697489 has 4 divisors (see below), whose sum is σ = 85536180. Its totient is φ = 83858800.

The previous prime is 84697427. The next prime is 84697493. The reversal of 84697489 is 98479648.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38688400 + 46009089 = 6220^2 + 6783^2 .

It is a cyclic number.

It is not a de Polignac number, because 84697489 - 2⁹ = 84696977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84697499) 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, 419194 + ... + 419395.

It is an arithmetic number, because the mean of its divisors is an integer number (21384045).

Almost surely, 2^84697489 is an apocalyptic number.

It is an amenable number.

84697489 is a deficient number, since it is larger than the sum of its proper divisors (838691).

84697489 is a wasteful number, since it uses less digits than its factorization.

84697489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838690.

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

The square root of 84697489 is about 9203.1238718166. The cubic root of 84697489 is about 439.1607435387.

The spelling of 84697489 in words is "eighty-four million, six hundred ninety-seven thousand, four hundred eighty-nine".