84891629 has 4 divisors (see below), whose sum is σ = 85331676. Its totient is φ = 84451584.

The previous prime is 84891593. The next prime is 84891679. The reversal of 84891629 is 92619848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53509225 + 31382404 = 7315^2 + 5602^2 .

It is a cyclic number.

It is not a de Polignac number, because 84891629 - 2¹² = 84887533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84891679) 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 3 ways as a sum of consecutive naturals, for example, 219734 + ... + 220119.

It is an arithmetic number, because the mean of its divisors is an integer number (21332919).

Almost surely, 2^84891629 is an apocalyptic number.

It is an amenable number.

84891629 is a deficient number, since it is larger than the sum of its proper divisors (440047).

84891629 is a wasteful number, since it uses less digits than its factorization.

84891629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440046.

The product of its digits is 248832, while the sum is 47.

The square root of 84891629 is about 9213.6653401347. The cubic root of 84891629 is about 439.4960293836.

The spelling of 84891629 in words is "eighty-four million, eight hundred ninety-one thousand, six hundred twenty-nine".