4003956 has 36 divisors (see below), whose sum is σ = 11042304. Its totient is φ = 1213200.

The previous prime is 4003949. The next prime is 4003963. The reversal of 4003956 is 6593004.

It is a happy number.

4003956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4003949) and next prime (4003963).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4660 + ... + 5451.

Almost surely, 2^4003956 is an apocalyptic number.

It is an amenable number.

4003956 is an abundant number, since it is smaller than the sum of its proper divisors (7038348).

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

4003956 is a wasteful number, since it uses less digits than its factorization.

4003956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132 (or 10127 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 4003956 is about 2000.9887555906. The cubic root of 4003956 is about 158.7924192757.

It can be divided in two parts, 400 and 3956, that added together give a square (4356 = 66²).

The spelling of 4003956 in words is "four million, three thousand, nine hundred fifty-six".