3979111725 has 36 divisors (see below), whose sum is σ = 7154866836. Its totient is φ = 2113904640.

The previous prime is 3979111723. The next prime is 3979111739. The reversal of 3979111725 is 5271119793.

It is a happy number.

3979111725 is a `hidden beast` number, since 397 + 91 + 1 + 172 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1022144841 + 2956966884 = 31971^2 + 54378^2 .

It is not a de Polignac number, because 3979111725 - 2¹ = 3979111723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979111723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23419 + ... + 92231.

It is an arithmetic number, because the mean of its divisors is an integer number (198746301).

Almost surely, 2^3979111725 is an apocalyptic number.

It is an amenable number.

3979111725 is a deficient number, since it is larger than the sum of its proper divisors (3175755111).

3979111725 is a wasteful number, since it uses less digits than its factorization.

3979111725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69086 (or 69078 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 3979111725 is about 63080.2007368398. The cubic root of 3979111725 is about 1584.6330556641.

The spelling of 3979111725 in words is "three billion, nine hundred seventy-nine million, one hundred eleven thousand, seven hundred twenty-five".