84644901 has 12 divisors (see below), whose sum is σ = 133380000. Its totient is φ = 51299880.

The previous prime is 84644893. The next prime is 84644909. The reversal of 84644901 is 10944648.

It is a happy number.

84644901 is a `hidden beast` number, since 8 + 4 + 644 + 9 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (84644893) and next prime (84644909).

It is not a de Polignac number, because 84644901 - 2³ = 84644893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84644909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427401 + ... + 427598.

It is an arithmetic number, because the mean of its divisors is an integer number (11115000).

Almost surely, 2^84644901 is an apocalyptic number.

It is an amenable number.

84644901 is a deficient number, since it is larger than the sum of its proper divisors (48735099).

84644901 is a wasteful number, since it uses less digits than its factorization.

84644901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855016 (or 855013 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 84644901 is about 9200.2663548400. The cubic root of 84644901 is about 439.0698342455.

The spelling of 84644901 in words is "eighty-four million, six hundred forty-four thousand, nine hundred one".