3979564 has 24 divisors (see below), whose sum is σ = 7550928. Its totient is φ = 1827840.

The previous prime is 3979561. The next prime is 3979567. The reversal of 3979564 is 4659793.

It is an interprime number because it is at equal distance from previous prime (3979561) and next prime (3979567).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 3979564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979561) 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, 2244 + ... + 3604.

It is an arithmetic number, because the mean of its divisors is an integer number (314622).

Almost surely, 2^3979564 is an apocalyptic number.

3979564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3979564 is a deficient number, since it is larger than the sum of its proper divisors (3571364).

3979564 is a wasteful number, since it uses less digits than its factorization.

3979564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1423 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 3979564 is about 1994.8844578070. The cubic root of 3979564 is about 158.4693091070.

The spelling of 3979564 in words is "three million, nine hundred seventy-nine thousand, five hundred sixty-four".