3959397 has 24 divisors (see below), whose sum is σ = 6310304. Its totient is φ = 2376864.

The previous prime is 3959393. The next prime is 3959441. The reversal of 3959397 is 7939593.

It is not a de Polignac number, because 3959397 - 2² = 3959393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4638 + ... + 5424.

Almost surely, 2^3959397 is an apocalyptic number.

It is an amenable number.

3959397 is a deficient number, since it is larger than the sum of its proper divisors (2350907).

3959397 is a wasteful number, since it uses less digits than its factorization.

3959397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 846 counting only the distinct ones).

The product of its digits is 229635, while the sum is 45.

The square root of 3959397 is about 1989.8233589945. The cubic root of 3959397 is about 158.2011671463.

It can be divided in two parts, 3959 and 397, that added together give a square (4356 = 66²).

The spelling of 3959397 in words is "three million, nine hundred fifty-nine thousand, three hundred ninety-seven".