4006455643 has 4 divisors (see below), whose sum is σ = 4006763568. Its totient is φ = 4006147720.

The previous prime is 4006455623. The next prime is 4006455667. The reversal of 4006455643 is 3465546004.

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 4006455643 - 2⁵ = 4006455611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006455613) 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, 133543 + ... + 160768.

It is an arithmetic number, because the mean of its divisors is an integer number (1001690892).

Almost surely, 2^4006455643 is an apocalyptic number.

4006455643 is a deficient number, since it is larger than the sum of its proper divisors (307925).

4006455643 is a wasteful number, since it uses less digits than its factorization.

4006455643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307924.

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 4006455643 is about 63296.5689670459. The cubic root of 4006455643 is about 1588.2545675076.

The spelling of 4006455643 in words is "four billion, six million, four hundred fifty-five thousand, six hundred forty-three".