3969147 has 48 divisors (see below), whose sum is σ = 6945792. Its totient is φ = 1995840.

The previous prime is 3969137. The next prime is 3969151. The reversal of 3969147 is 7419693.

It is not a de Polignac number, because 3969147 - 2⁷ = 3969019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3969137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59208 + ... + 59274.

It is an arithmetic number, because the mean of its divisors is an integer number (144704).

Almost surely, 2^3969147 is an apocalyptic number.

3969147 is a deficient number, since it is larger than the sum of its proper divisors (2976645).

3969147 is a wasteful number, since it uses less digits than its factorization.

3969147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 121 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 3969147 is about 1992.2718188038. The cubic root of 3969147 is about 158.3309172915.

The spelling of 3969147 in words is "three million, nine hundred sixty-nine thousand, one hundred forty-seven".