84108406 has 4 divisors (see below), whose sum is σ = 126162612. Its totient is φ = 42054202.

The previous prime is 84108397. The next prime is 84108407. The reversal of 84108406 is 60480148.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84108407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21027100 + ... + 21027103.

It is an arithmetic number, because the mean of its divisors is an integer number (31540653).

Almost surely, 2^84108406 is an apocalyptic number.

84108406 is a deficient number, since it is larger than the sum of its proper divisors (42054206).

84108406 is a wasteful number, since it uses less digits than its factorization.

84108406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42054205.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 84108406 is about 9171.0635152091. The cubic root of 84108406 is about 438.1402322674.

The spelling of 84108406 in words is "eighty-four million, one hundred eight thousand, four hundred six".