84699021 has 8 divisors (see below), whose sum is σ = 123198624. Its totient is φ = 51332720.

The previous prime is 84699019. The next prime is 84699047. The reversal of 84699021 is 12099648.

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

It is a cyclic number.

It is not a de Polignac number, because 84699021 - 2¹ = 84699019 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84699001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1283286 + ... + 1283351.

It is an arithmetic number, because the mean of its divisors is an integer number (15399828).

Almost surely, 2^84699021 is an apocalyptic number.

It is an amenable number.

84699021 is a deficient number, since it is larger than the sum of its proper divisors (38499603).

84699021 is a wasteful number, since it uses less digits than its factorization.

84699021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566651.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 84699021 is about 9203.2071040480. The cubic root of 84699021 is about 439.1633913551.

The spelling of 84699021 in words is "eighty-four million, six hundred ninety-nine thousand, twenty-one".