84395690 has 8 divisors (see below), whose sum is σ = 151912260. Its totient is φ = 33758272.

The previous prime is 84395677. The next prime is 84395711. The reversal of 84395690 is 9659348.

It can be written as a sum of positive squares in 2 ways, for example, as 80156209 + 4239481 = 8953^2 + 2059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84395690² = 14245264981152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4219775 + ... + 4219794.

Almost surely, 2^84395690 is an apocalyptic number.

84395690 is a deficient number, since it is larger than the sum of its proper divisors (67516570).

84395690 is a wasteful number, since it uses less digits than its factorization.

84395690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8439576.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 84395690 is about 9186.7126873545. The cubic root of 84395690 is about 438.6385084254.

The spelling of 84395690 in words is "eighty-four million, three hundred ninety-five thousand, six hundred ninety".