4070639 has 4 divisors (see below), whose sum is σ = 4093560. Its totient is φ = 4047720.

The previous prime is 4070621. The next prime is 4070653. The reversal of 4070639 is 9360704.

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

It is a cyclic number.

It is not a de Polignac number, because 4070639 - 2⁸ = 4070383 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 (4070669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11192 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (1023390).

Almost surely, 2^4070639 is an apocalyptic number.

4070639 is a deficient number, since it is larger than the sum of its proper divisors (22921).

4070639 is a wasteful number, since it uses less digits than its factorization.

4070639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22920.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 4070639 is about 2017.5824642378. The cubic root of 4070639 is about 159.6690947534.

The spelling of 4070639 in words is "four million, seventy thousand, six hundred thirty-nine".