3971527 has 16 divisors (see below), whose sum is σ = 4713984. Its totient is φ = 3276000.

The previous prime is 3971501. The next prime is 3971531. The reversal of 3971527 is 7251793.

It is a de Polignac number, because none of the positive numbers 2^k-3971527 is a prime.

It is a Duffinian number.

Its product of digits (13230) is a multiple of the sum of its prime divisors (270).

3971527 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3971492 and 3971501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971537) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30252 + ... + 30382.

It is an arithmetic number, because the mean of its divisors is an integer number (294624).

Almost surely, 2^3971527 is an apocalyptic number.

3971527 is a deficient number, since it is larger than the sum of its proper divisors (742457).

3971527 is a wasteful number, since it uses less digits than its factorization.

3971527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

The product of its digits is 13230, while the sum is 34.

The square root of 3971527 is about 1992.8690373429. The cubic root of 3971527 is about 158.3625573635.

The spelling of 3971527 in words is "three million, nine hundred seventy-one thousand, five hundred twenty-seven".