3949494938 has 8 divisors (see below), whose sum is σ = 5924613888. Its totient is φ = 1974623644.

The previous prime is 3949494937. The next prime is 3949494947. The reversal of 3949494938 is 8394949493.

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

It is not an unprimeable number, because it can be changed into a prime (3949494931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14906 + ... + 90117.

It is an arithmetic number, because the mean of its divisors is an integer number (740576736).

Almost surely, 2^3949494938 is an apocalyptic number.

3949494938 is a deficient number, since it is larger than the sum of its proper divisors (1975118950).

3949494938 is a wasteful number, since it uses less digits than its factorization.

3949494938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123828.

The product of its digits is 30233088, while the sum is 62.

The square root of 3949494938 is about 62845.0072639028. The cubic root of 3949494938 is about 1580.6917520536.

The spelling of 3949494938 in words is "three billion, nine hundred forty-nine million, four hundred ninety-four thousand, nine hundred thirty-eight".