4001976 has 96 divisors (see below), whose sum is σ = 12280320. Its totient is φ = 1166400.

The previous prime is 4001947. The next prime is 4001999. The reversal of 4001976 is 6791004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24471 + ... + 24633.

It is an arithmetic number, because the mean of its divisors is an integer number (127920).

Almost surely, 2^4001976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4001976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6140160).

4001976 is an abundant number, since it is smaller than the sum of its proper divisors (8278344).

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

4001976 is a wasteful number, since it uses less digits than its factorization.

4001976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 4001976 is about 2000.4939390061. The cubic root of 4001976 is about 158.7662400977.

The spelling of 4001976 in words is "four million, one thousand, nine hundred seventy-six".