6939144 has 24 divisors (see below), whose sum is σ = 18793710. Its totient is φ = 2313024.

The previous prime is 6939143. The next prime is 6939151. The reversal of 6939144 is 4419396.

It can be written as a sum of positive squares in only one way, i.e., 5116644 + 1822500 = 2262^2 + 1350^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 6939099 and 6939108.

It is not an unprimeable number, because it can be changed into a prime (6939143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48117 + ... + 48260.

Almost surely, 2^6939144 is an apocalyptic number.

It is an amenable number.

6939144 is an abundant number, since it is smaller than the sum of its proper divisors (11854566).

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

6939144 is a wasteful number, since it uses less digits than its factorization.

6939144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96389 (or 96382 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6939144 is about 2634.2255028756. The cubic root of 6939144 is about 190.7371547834.

The spelling of 6939144 in words is "six million, nine hundred thirty-nine thousand, one hundred forty-four".