4270639 has 2 divisors, whose sum is σ = 4270640. Its totient is φ = 4270638.

The previous prime is 4270633. The next prime is 4270667. The reversal of 4270639 is 9360724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4270639 - 2²¹ = 2173487 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4270639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4270633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2135319 + 2135320.

It is an arithmetic number, because the mean of its divisors is an integer number (2135320).

Almost surely, 2^4270639 is an apocalyptic number.

4270639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4270639 is an equidigital number, since it uses as much as digits as its factorization.

4270639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 4270639 is about 2066.5524430800. The cubic root of 4270639 is about 162.2423720479.

The spelling of 4270639 in words is "four million, two hundred seventy thousand, six hundred thirty-nine".