8401669 has 4 divisors (see below), whose sum is σ = 8429344. Its totient is φ = 8373996.

The previous prime is 8401661. The next prime is 8401681. The reversal of 8401669 is 9661048.

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 8401669 - 2³ = 8401661 is a prime.

It is a super-2 number, since 2×8401669² = 141176083971122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8401661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13377 + ... + 13990.

It is an arithmetic number, because the mean of its divisors is an integer number (2107336).

Almost surely, 2^8401669 is an apocalyptic number.

It is an amenable number.

8401669 is a deficient number, since it is larger than the sum of its proper divisors (27675).

8401669 is a wasteful number, since it uses less digits than its factorization.

8401669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27674.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8401669 is about 2898.5632647917. The cubic root of 8401669 is about 203.2927336898.

The spelling of 8401669 in words is "eight million, four hundred one thousand, six hundred sixty-nine".