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3964 = 22991
BaseRepresentation
bin111101111100
312102211
4331330
5111324
630204
714362
oct7574
95384
103964
112a84
122364
131a5c
141632
151294
hexf7c

3964 has 6 divisors (see below), whose sum is σ = 6944. Its totient is φ = 1980.

The previous prime is 3947. The next prime is 3967. The reversal of 3964 is 4693.

Subtracting 3964 from its reverse (4693), we obtain a 6-th power (729 = 36).

It can be divided in two parts, 396 and 4, that added together give a square (400 = 202).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492 + ... + 499.

It is an amenable number.

3964 is a deficient number, since it is larger than the sum of its proper divisors (2980).

3964 is a wasteful number, since it uses less digits than its factorization.

3964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 993 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 3964 is about 62.9603049548. The cubic root of 3964 is about 15.8262449034.

The spelling of 3964 in words is "three thousand, nine hundred sixty-four".

Divisors: 1 2 4 991 1982 3964