3949942 has 8 divisors (see below), whose sum is σ = 5979600. Its totient is φ = 1956744.

The previous prime is 3949919. The next prime is 3949961. The reversal of 3949942 is 2499493.

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

It is a junction number, because it is equal to n+sod(n) for n = 3949895 and 3949904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8842 + ... + 9277.

It is an arithmetic number, because the mean of its divisors is an integer number (747450).

Almost surely, 2^3949942 is an apocalyptic number.

3949942 is a deficient number, since it is larger than the sum of its proper divisors (2029658).

3949942 is a wasteful number, since it uses less digits than its factorization.

3949942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18230.

The product of its digits is 69984, while the sum is 40.

The square root of 3949942 is about 1987.4460998981. The cubic root of 3949942 is about 158.0751391794.

The spelling of 3949942 in words is "three million, nine hundred forty-nine thousand, nine hundred forty-two".