3940989 has 8 divisors (see below), whose sum is σ = 5658912. Its totient is φ = 2425200.

The previous prime is 3940987. The next prime is 3941011. The reversal of 3940989 is 9890493.

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

It is not a de Polignac number, because 3940989 - 2¹ = 3940987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3940989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50487 + ... + 50564.

It is an arithmetic number, because the mean of its divisors is an integer number (707364).

Almost surely, 2^3940989 is an apocalyptic number.

3940989 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3940989 is a deficient number, since it is larger than the sum of its proper divisors (1717923).

3940989 is a wasteful number, since it uses less digits than its factorization.

3940989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101067.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3940989 is about 1985.1924339973. The cubic root of 3940989 is about 157.9556169735.

The spelling of 3940989 in words is "three million, nine hundred forty thousand, nine hundred eighty-nine".