8429213 has 6 divisors (see below), whose sum is σ = 9127674. Its totient is φ = 7780656.

The previous prime is 8429209. The next prime is 8429233. The reversal of 8429213 is 3129248.

It can be written as a sum of positive squares in 3 ways, for example, as 822649 + 7606564 = 907^2 + 2758^2 .

It is not a de Polignac number, because 8429213 - 2² = 8429209 is a prime.

It is a d-powerful number, because it can be written as 8 + 4⁵ + 2¹⁵ + 9⁴ + 2²³ + 1 + 3⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8429233) 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 5 ways as a sum of consecutive naturals, for example, 24770 + ... + 25107.

It is an arithmetic number, because the mean of its divisors is an integer number (1521279).

Almost surely, 2^8429213 is an apocalyptic number.

It is an amenable number.

8429213 is a deficient number, since it is larger than the sum of its proper divisors (698461).

8429213 is a wasteful number, since it uses less digits than its factorization.

8429213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49903 (or 49890 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 8429213 is about 2903.3106964292. The cubic root of 8429213 is about 203.5146494011.

The spelling of 8429213 in words is "eight million, four hundred twenty-nine thousand, two hundred thirteen".