3954689 has 8 divisors (see below), whose sum is σ = 4159680. Its totient is φ = 3752496.

The previous prime is 3954683. The next prime is 3954697. The reversal of 3954689 is 9864593.

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

It is a de Polignac number, because none of the positive numbers 2^k-3954689 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3954683) 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, 2579 + ... + 3815.

It is an arithmetic number, because the mean of its divisors is an integer number (519960).

It is a Proth number, since it is equal to 1931 ⋅ 2¹¹ + 1 and 1931 < 2¹¹.

Almost surely, 2^3954689 is an apocalyptic number.

It is an amenable number.

3954689 is a deficient number, since it is larger than the sum of its proper divisors (204991).

3954689 is a wasteful number, since it uses less digits than its factorization.

3954689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its digits is 233280, while the sum is 44.

The square root of 3954689 is about 1988.6399875292. The cubic root of 3954689 is about 158.1384381920.

The spelling of 3954689 in words is "three million, nine hundred fifty-four thousand, six hundred eighty-nine".