3942978423 has 16 divisors (see below), whose sum is σ = 5294743680. Its totient is φ = 2609996256.

The previous prime is 3942978421. The next prime is 3942978427. The reversal of 3942978423 is 3248792493.

It is not a de Polignac number, because 3942978423 - 2¹ = 3942978421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942978421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 250461 + ... + 265737.

It is an arithmetic number, because the mean of its divisors is an integer number (330921480).

Almost surely, 2^3942978423 is an apocalyptic number.

3942978423 is a deficient number, since it is larger than the sum of its proper divisors (1351765257).

3942978423 is a wasteful number, since it uses less digits than its factorization.

3942978423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15886.

The product of its digits is 2612736, while the sum is 51.

The square root of 3942978423 is about 62793.1399358242. The cubic root of 3942978423 is about 1579.8219132453.

The spelling of 3942978423 in words is "three billion, nine hundred forty-two million, nine hundred seventy-eight thousand, four hundred twenty-three".