3942369 has 24 divisors (see below), whose sum is σ = 5957952. Its totient is φ = 2509920.

The previous prime is 3942359. The next prime is 3942373. The reversal of 3942369 is 9632493.

It is a happy number.

It is not a de Polignac number, because 3942369 - 2⁴ = 3942353 is a prime.

It is a super-2 number, since 2×3942369² = 31084546664322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3942349) 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, 23524 + ... + 23690.

It is an arithmetic number, because the mean of its divisors is an integer number (248248).

Almost surely, 2^3942369 is an apocalyptic number.

It is an amenable number.

3942369 is a deficient number, since it is larger than the sum of its proper divisors (2015583).

3942369 is a wasteful number, since it uses less digits than its factorization.

3942369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 274 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3942369 is about 1985.5399769332. The cubic root of 3942369 is about 157.9740517127.

The spelling of 3942369 in words is "three million, nine hundred forty-two thousand, three hundred sixty-nine".