8213429 has 6 divisors (see below), whose sum is σ = 9554454. Its totient is φ = 7040040.

The previous prime is 8213423. The next prime is 8213437. The reversal of 8213429 is 9243128.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 4092529 = 2030^2 + 2023^2 .

It is not a de Polignac number, because 8213429 - 2⁸ = 8213173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83762 + ... + 83859.

It is an arithmetic number, because the mean of its divisors is an integer number (1592409).

Almost surely, 2^8213429 is an apocalyptic number.

It is an amenable number.

8213429 is a deficient number, since it is larger than the sum of its proper divisors (1341025).

8213429 is a wasteful number, since it uses less digits than its factorization.

8213429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167635 (or 167628 counting only the distinct ones).

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

The square root of 8213429 is about 2865.9080585392. The cubic root of 8213429 is about 201.7629886911.

The spelling of 8213429 in words is "eight million, two hundred thirteen thousand, four hundred twenty-nine".