3945953321 has 8 divisors (see below), whose sum is σ = 3974624640. Its totient is φ = 3917342368.

The previous prime is 3945953287. The next prime is 3945953339. The reversal of 3945953321 is 1233595493.

3945953321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3945953321 - 2⁶ = 3945953257 is a prime.

It is a super-2 number, since 2×3945953321² = 31141095223021858082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3945958321) 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, 120500 + ... + 149706.

It is an arithmetic number, because the mean of its divisors is an integer number (496828080).

Almost surely, 2^3945953321 is an apocalyptic number.

It is an amenable number.

3945953321 is a deficient number, since it is larger than the sum of its proper divisors (28671319).

3945953321 is a wasteful number, since it uses less digits than its factorization.

3945953321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30183.

The product of its digits is 437400, while the sum is 44.

The square root of 3945953321 is about 62816.8235507018. The cubic root of 3945953321 is about 1580.2191279961.

The spelling of 3945953321 in words is "three billion, nine hundred forty-five million, nine hundred fifty-three thousand, three hundred twenty-one".