3872769 has 4 divisors (see below), whose sum is σ = 5163696. Its totient is φ = 2581844.

The previous prime is 3872767. The next prime is 3872773. The reversal of 3872769 is 9672783.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9672783 = 3 ⋅3224261.

It is a cyclic number.

It is not a de Polignac number, because 3872769 - 2¹ = 3872767 is a prime.

It is a super-2 number, since 2×3872769² = 29996679454722, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

3872769 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3872769.

It is not an unprimeable number, because it can be changed into a prime (3872761) 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, 645459 + ... + 645464.

It is an arithmetic number, because the mean of its divisors is an integer number (1290924).

It is a Proth number, since it is equal to 1891 ⋅ 2¹¹ + 1 and 1891 < 2¹¹.

Almost surely, 2^3872769 is an apocalyptic number.

It is an amenable number.

3872769 is a deficient number, since it is larger than the sum of its proper divisors (1290927).

3872769 is a wasteful number, since it uses less digits than its factorization.

3872769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290926.

The product of its digits is 127008, while the sum is 42.

The square root of 3872769 is about 1967.9352123482. The cubic root of 3872769 is about 157.0388830898.

The spelling of 3872769 in words is "three million, eight hundred seventy-two thousand, seven hundred sixty-nine".