3944926878 has 16 divisors (see below), whose sum is σ = 7904025360. Its totient is φ = 1312613696.

The previous prime is 3944926877. The next prime is 3944926897. The reversal of 3944926878 is 8786294493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944926871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586863 + ... + 593546.

It is an arithmetic number, because the mean of its divisors is an integer number (494001585).

Almost surely, 2^3944926878 is an apocalyptic number.

3944926878 is an abundant number, since it is smaller than the sum of its proper divisors (3959098482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3944926878 is a wasteful number, since it uses less digits than its factorization.

3944926878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180971.

The product of its digits is 20901888, while the sum is 60.

The square root of 3944926878 is about 62808.6528911423. The cubic root of 3944926878 is about 1580.0820976942.

The spelling of 3944926878 in words is "three billion, nine hundred forty-four million, nine hundred twenty-six thousand, eight hundred seventy-eight".