3950009 has 16 divisors (see below), whose sum is σ = 4713216. Its totient is φ = 3240000.

The previous prime is 3949969. The next prime is 3950029. The reversal of 3950009 is 9000593.

It is a cyclic number.

It is not a de Polignac number, because 3950009 - 2¹² = 3945913 is a prime.

It is a super-2 number, since 2×3950009² = 31205142200162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3950009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3950029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26084 + ... + 26234.

It is an arithmetic number, because the mean of its divisors is an integer number (294576).

Almost surely, 2^3950009 is an apocalyptic number.

It is an amenable number.

3950009 is a deficient number, since it is larger than the sum of its proper divisors (763207).

3950009 is a wasteful number, since it uses less digits than its factorization.

3950009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 3950009 is about 1987.4629556296. The cubic root of 3950009 is about 158.0760329456.

The spelling of 3950009 in words is "three million, nine hundred fifty thousand, nine".