3971772 has 36 divisors (see below), whose sum is σ = 11474736. Its totient is φ = 1134720.

The previous prime is 3971749. The next prime is 3971791. The reversal of 3971772 is 2771793.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7629 + ... + 8132.

Almost surely, 2^3971772 is an apocalyptic number.

It is an amenable number.

3971772 is an abundant number, since it is smaller than the sum of its proper divisors (7502964).

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

3971772 is a wasteful number, since it uses less digits than its factorization.

3971772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15778 (or 15773 counting only the distinct ones).

The product of its digits is 18522, while the sum is 36.

The square root of 3971772 is about 1992.9305055621. The cubic root of 3971772 is about 158.3658137120.

The spelling of 3971772 in words is "three million, nine hundred seventy-one thousand, seven hundred seventy-two".