3867969249 has 9 divisors (see below), whose sum is σ = 5587336209. Its totient is φ = 2578521780.

The previous prime is 3867969241. The next prime is 3867969257. The reversal of 3867969249 is 9429697683.

The square root of 3867969249 is 62193.

It is a perfect power (a square), and thus also a powerful number.

3867969249 is a `hidden beast` number, since 386 + 7 + 9 + 6 + 9 + 249 = 666.

It is an interprime number because it is at equal distance from previous prime (3867969241) and next prime (3867969257).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 3867969249 - 2³ = 3867969241 is a prime.

It is a super-2 number, since 2×3867969249² = 29922372222419248002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3867969241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 176214 + ... + 196944.

Almost surely, 2^3867969249 is an apocalyptic number.

3867969249 is the 62193-rd square number.

3867969249 is the 31097-th centered octagonal number.

It is an amenable number.

3867969249 is a deficient number, since it is larger than the sum of its proper divisors (1719366960).

3867969249 is an frugal number, since it uses more digits than its factorization.

3867969249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41468 (or 20734 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The cubic root of 3867969249 is about 1569.7398042033.

The spelling of 3867969249 in words is "three billion, eight hundred sixty-seven million, nine hundred sixty-nine thousand, two hundred forty-nine".