84409906 has 16 divisors (see below), whose sum is σ = 145664640. Its totient is φ = 35935200.

The previous prime is 84409891. The next prime is 84409937. The reversal of 84409906 is 60990448.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17851 + ... + 22078.

It is an arithmetic number, because the mean of its divisors is an integer number (9104040).

Almost surely, 2^84409906 is an apocalyptic number.

84409906 is a deficient number, since it is larger than the sum of its proper divisors (61254734).

84409906 is a wasteful number, since it uses less digits than its factorization.

84409906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40089.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 84409906 is about 9187.4863809423. The cubic root of 84409906 is about 438.6631358084.

The spelling of 84409906 in words is "eighty-four million, four hundred nine thousand, nine hundred six".