3949293945 has 32 divisors (see below), whose sum is σ = 6350068224. Its totient is φ = 2095923200.

The previous prime is 3949293899. The next prime is 3949293947. The reversal of 3949293945 is 5493929493.

It is not a de Polignac number, because 3949293945 - 2⁹ = 3949293433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3949293947) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4143589 + ... + 4144541.

It is an arithmetic number, because the mean of its divisors is an integer number (198439632).

Almost surely, 2^3949293945 is an apocalyptic number.

It is an amenable number.

3949293945 is a deficient number, since it is larger than the sum of its proper divisors (2400774279).

3949293945 is a wasteful number, since it uses less digits than its factorization.

3949293945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033.

The product of its digits is 9447840, while the sum is 57.

The square root of 3949293945 is about 62843.4081268672. The cubic root of 3949293945 is about 1580.6649373704.

The spelling of 3949293945 in words is "three billion, nine hundred forty-nine million, two hundred ninety-three thousand, nine hundred forty-five".