3955669 has 4 divisors (see below), whose sum is σ = 3986944. Its totient is φ = 3924396.

The previous prime is 3955663. The next prime is 3955673. The reversal of 3955669 is 9665593.

It is a happy number.

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 3955669 - 2⁹ = 3955157 is a prime.

It is a super-2 number, since 2×3955669² = 31294634475122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁶ + 9 + 5⁹ + 5⁹ + 6⁴ + 6⁶ + 9³ .

It is a Duffinian number.

3955669 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955663) 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, 15447 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (996736).

Almost surely, 2^3955669 is an apocalyptic number.

It is an amenable number.

3955669 is a deficient number, since it is larger than the sum of its proper divisors (31275).

3955669 is a wasteful number, since it uses less digits than its factorization.

3955669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31274.

The product of its digits is 218700, while the sum is 43.

The square root of 3955669 is about 1988.8863718172. The cubic root of 3955669 is about 158.1514997222.

It can be divided in two parts, 3955 and 669, that added together give a square (4624 = 68²).

The spelling of 3955669 in words is "three million, nine hundred fifty-five thousand, six hundred sixty-nine".