3889249945 has 16 divisors (see below), whose sum is σ = 5335424640. Its totient is φ = 2666116224.

The previous prime is 3889249913. The next prime is 3889249957. The reversal of 3889249945 is 5499429883.

It is a cyclic number.

It is not a de Polignac number, because 3889249945 - 2⁵ = 3889249913 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117174 + ... + 146656.

It is an arithmetic number, because the mean of its divisors is an integer number (333464040).

Almost surely, 2^3889249945 is an apocalyptic number.

3889249945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3889249945 is a deficient number, since it is larger than the sum of its proper divisors (1446174695).

3889249945 is a wasteful number, since it uses less digits than its factorization.

3889249945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33264.

The product of its digits is 22394880, while the sum is 61.

The square root of 3889249945 is about 62363.8512681826. The cubic root of 3889249945 is about 1572.6133258064.

The spelling of 3889249945 in words is "three billion, eight hundred eighty-nine million, two hundred forty-nine thousand, nine hundred forty-five".