3971250 has 60 divisors (see below), whose sum is σ = 10782486. Its totient is φ = 1056000.

The previous prime is 3971239. The next prime is 3971257. The reversal of 3971250 is 521793.

3971250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 15129 + 3956121 = 123^2 + 1989^2 .

It is not an unprimeable number, because it can be changed into a prime (3971257) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 11074 + ... + 11426.

Almost surely, 2^3971250 is an apocalyptic number.

3971250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3971250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5391243).

3971250 is an abundant number, since it is smaller than the sum of its proper divisors (6811236).

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

3971250 is a wasteful number, since it uses less digits than its factorization.

3971250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 3971250 is about 1992.7995383380. The cubic root of 3971250 is about 158.3588755346.

It can be divided in two parts, 39 and 71250, that added together give a square (71289 = 267²).

The spelling of 3971250 in words is "three million, nine hundred seventy-one thousand, two hundred fifty".