3947469 has 4 divisors (see below), whose sum is σ = 5263296. Its totient is φ = 2631644.

The previous prime is 3947453. The next prime is 3947473. The reversal of 3947469 is 9647493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3947469 - 2⁴ = 3947453 is a prime.

It is a super-3 number, since 3×3947469³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3947469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657909 + ... + 657914.

It is an arithmetic number, because the mean of its divisors is an integer number (1315824).

Almost surely, 2^3947469 is an apocalyptic number.

It is an amenable number.

3947469 is a deficient number, since it is larger than the sum of its proper divisors (1315827).

3947469 is a wasteful number, since it uses less digits than its factorization.

3947469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315826.

The product of its digits is 163296, while the sum is 42.

The square root of 3947469 is about 1986.8238472497. The cubic root of 3947469 is about 158.0421427935.

The spelling of 3947469 in words is "three million, nine hundred forty-seven thousand, four hundred sixty-nine".