4059640021 has 8 divisors (see below), whose sum is σ = 4086475904. Its totient is φ = 4032828000.

The previous prime is 4059640007. The next prime is 4059640049. The reversal of 4059640021 is 1200469504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4059640021 - 2⁵ = 4059639989 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 (4059640721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446521 + ... + 455521.

It is an arithmetic number, because the mean of its divisors is an integer number (510809488).

Almost surely, 2^4059640021 is an apocalyptic number.

It is an amenable number.

4059640021 is a deficient number, since it is larger than the sum of its proper divisors (26835883).

4059640021 is a wasteful number, since it uses less digits than its factorization.

4059640021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11931.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 4059640021 is about 63715.3044487743. The cubic root of 4059640021 is about 1595.2515493104.

The spelling of 4059640021 in words is "four billion, fifty-nine million, six hundred forty thousand, twenty-one".