3979545 has 16 divisors (see below), whose sum is σ = 6420480. Its totient is φ = 2104704.

The previous prime is 3979543. The next prime is 3979553. The reversal of 3979545 is 5459793.

It is not a de Polignac number, because 3979545 - 2¹ = 3979543 is a prime.

3979545 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3979497 and 3979506.

It is not an unprimeable number, because it can be changed into a prime (3979543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861 + ... + 2949.

It is an arithmetic number, because the mean of its divisors is an integer number (401280).

Almost surely, 2^3979545 is an apocalyptic number.

It is an amenable number.

3979545 is a deficient number, since it is larger than the sum of its proper divisors (2440935).

3979545 is a wasteful number, since it uses less digits than its factorization.

3979545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its digits is 170100, while the sum is 42.

The square root of 3979545 is about 1994.8796956208. The cubic root of 3979545 is about 158.4690569084.

The spelling of 3979545 in words is "three million, nine hundred seventy-nine thousand, five hundred forty-five".