3923495439 has 16 divisors (see below), whose sum is σ = 5449635840. Its totient is φ = 2508058080.

The previous prime is 3923495437. The next prime is 3923495447. The reversal of 3923495439 is 9345943293.

It is a happy number.

It is not a de Polignac number, because 3923495439 - 2¹ = 3923495437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3923495391 and 3923495400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3923495431) 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 15 ways as a sum of consecutive naturals, for example, 183387 + ... + 203660.

It is an arithmetic number, because the mean of its divisors is an integer number (340602240).

Almost surely, 2^3923495439 is an apocalyptic number.

3923495439 is a deficient number, since it is larger than the sum of its proper divisors (1526140401).

3923495439 is a wasteful number, since it uses less digits than its factorization.

3923495439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387190.

The product of its digits is 3149280, while the sum is 51.

The square root of 3923495439 is about 62637.8115757567. The cubic root of 3923495439 is about 1577.2155518145.

The spelling of 3923495439 in words is "three billion, nine hundred twenty-three million, four hundred ninety-five thousand, four hundred thirty-nine".