5638429 has 2 divisors, whose sum is σ = 5638430. Its totient is φ = 5638428.

The previous prime is 5638411. The next prime is 5638433. The reversal of 5638429 is 9248365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 643204 = 2235^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 5638429 - 2⁵ = 5638397 is a prime.

It is a Chen prime.

It is equal to p₃₈₉₆₆₅ and since 5638429 and 389665 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5638489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2819214 + 2819215.

It is an arithmetic number, because the mean of its divisors is an integer number (2819215).

Almost surely, 2^5638429 is an apocalyptic number.

It is an amenable number.

5638429 is a deficient number, since it is larger than the sum of its proper divisors (1).

5638429 is an equidigital number, since it uses as much as digits as its factorization.

5638429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 5638429 is about 2374.5376392047. The cubic root of 5638429 is about 177.9860802144.

The spelling of 5638429 in words is "five million, six hundred thirty-eight thousand, four hundred twenty-nine".