84941909 has 8 divisors (see below), whose sum is σ = 92383032. Its totient is φ = 77630400.

The previous prime is 84941903. The next prime is 84941917. The reversal of 84941909 is 90914948.

It can be written as a sum of positive squares in 4 ways, for example, as 17455684 + 67486225 = 4178^2 + 8215^2 .

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 84941909 - 2⁴ = 84941893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84941909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84941903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31034 + ... + 33659.

It is an arithmetic number, because the mean of its divisors is an integer number (11547879).

Almost surely, 2^84941909 is an apocalyptic number.

It is an amenable number.

84941909 is a deficient number, since it is larger than the sum of its proper divisors (7441123).

84941909 is a wasteful number, since it uses less digits than its factorization.

84941909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64807.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 84941909 is about 9216.3934920336. The cubic root of 84941909 is about 439.5827811608.

It can be divided in two parts, 84941 and 909, that multiplied together give a square (77211369 = 8787²).

The spelling of 84941909 in words is "eighty-four million, nine hundred forty-one thousand, nine hundred nine".