3947523 has 8 divisors (see below), whose sum is σ = 5281536. Its totient is φ = 2622600.

The previous prime is 3947507. The next prime is 3947533. The reversal of 3947523 is 3257493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3947523 - 2⁴ = 3947507 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 9⁵ + 4⁷ + 7³ + 5⁵ + 2²¹ + 3¹³ .

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3947533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (660192).

Almost surely, 2^3947523 is an apocalyptic number.

3947523 is a deficient number, since it is larger than the sum of its proper divisors (1334013).

3947523 is a wasteful number, since it uses less digits than its factorization.

3947523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545.

The product of its digits is 22680, while the sum is 33.

The square root of 3947523 is about 1986.8374367321. The cubic root of 3947523 is about 158.0428634441.

The spelling of 3947523 in words is "three million, nine hundred forty-seven thousand, five hundred twenty-three".