4223640406 has 4 divisors (see below), whose sum is σ = 6335460612. Its totient is φ = 2111820202.

The previous prime is 4223640401. The next prime is 4223640409. The reversal of 4223640406 is 6040463224.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223640401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055910100 + ... + 1055910103.

It is an arithmetic number, because the mean of its divisors is an integer number (1583865153).

Almost surely, 2^4223640406 is an apocalyptic number.

4223640406 is a deficient number, since it is larger than the sum of its proper divisors (2111820206).

4223640406 is a wasteful number, since it uses less digits than its factorization.

4223640406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111820205.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 4223640406 is about 64989.5407431073. The cubic root of 4223640406 is about 1616.4501355562.

The spelling of 4223640406 in words is "four billion, two hundred twenty-three million, six hundred forty thousand, four hundred six".