84409911 has 8 divisors (see below), whose sum is σ = 125051760. Its totient is φ = 56273256.

The previous prime is 84409891. The next prime is 84409937. The reversal of 84409911 is 11990448.

It is not a de Polignac number, because 84409911 - 2⁶ = 84409847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84409961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563120 + ... + 1563173.

It is an arithmetic number, because the mean of its divisors is an integer number (15631470).

Almost surely, 2^84409911 is an apocalyptic number.

84409911 is a deficient number, since it is larger than the sum of its proper divisors (40641849).

84409911 is a wasteful number, since it uses less digits than its factorization.

84409911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126302 (or 3126296 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 84409911 is about 9187.4866530515. The cubic root of 84409911 is about 438.6631444697.

The spelling of 84409911 in words is "eighty-four million, four hundred nine thousand, nine hundred eleven".