3950689 has 4 divisors (see below), whose sum is σ = 4158640. Its totient is φ = 3742740.

The previous prime is 3950659. The next prime is 3950693. The reversal of 3950689 is 9860593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3950689 - 2⁵ = 3950657 is a prime.

It is a Duffinian number.

3950689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3950629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103947 + ... + 103984.

It is an arithmetic number, because the mean of its divisors is an integer number (1039660).

Almost surely, 2^3950689 is an apocalyptic number.

It is an amenable number.

3950689 is a deficient number, since it is larger than the sum of its proper divisors (207951).

3950689 is a wasteful number, since it uses less digits than its factorization.

3950689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207950.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 3950689 is about 1987.6340206386. The cubic root of 3950689 is about 158.0851034342.

The spelling of 3950689 in words is "three million, nine hundred fifty thousand, six hundred eighty-nine".