3945689414 has 16 divisors (see below), whose sum is σ = 5982045696. Its totient is φ = 1951725000.

The previous prime is 3945689401. The next prime is 3945689431. The reversal of 3945689414 is 4149865493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148439 + ... + 172989.

It is an arithmetic number, because the mean of its divisors is an integer number (373877856).

Almost surely, 2^3945689414 is an apocalyptic number.

3945689414 is a deficient number, since it is larger than the sum of its proper divisors (2036356282).

3945689414 is a wasteful number, since it uses less digits than its factorization.

3945689414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25411.

The product of its digits is 3732480, while the sum is 53.

The square root of 3945689414 is about 62814.7229079298. The cubic root of 3945689414 is about 1580.1838986398.

The spelling of 3945689414 in words is "three billion, nine hundred forty-five million, six hundred eighty-nine thousand, four hundred fourteen".