3649969 has 8 divisors (see below), whose sum is σ = 3864960. Its totient is φ = 3440976.

The previous prime is 3649967. The next prime is 3649981. The reversal of 3649969 is 9699463.

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

It is a cyclic number.

It is not a de Polignac number, because 3649969 - 2¹ = 3649967 is a prime.

It is a super-2 number, since 2×3649969² = 26644547401922, which contains 22 as substring.

It is a Duffinian number.

3649969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3649967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217 + ... + 2710.

It is an arithmetic number, because the mean of its divisors is an integer number (483120).

Almost surely, 2^3649969 is an apocalyptic number.

It is an amenable number.

3649969 is a deficient number, since it is larger than the sum of its proper divisors (214991).

3649969 is a wasteful number, since it uses less digits than its factorization.

3649969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its digits is 314928, while the sum is 46.

The square root of 3649969 is about 1910.4892043663. The cubic root of 3649969 is about 153.9677365368.

It can be divided in two parts, 36 and 49969, that added together give a palindrome (50005).

The spelling of 3649969 in words is "three million, six hundred forty-nine thousand, nine hundred sixty-nine".