3872261 has 4 divisors (see below), whose sum is σ = 3885024. Its totient is φ = 3859500.

The previous prime is 3872249. The next prime is 3872273. The reversal of 3872261 is 1622783.

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 an interprime number because it is at equal distance from previous prime (3872249) and next prime (3872273).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3872261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872201) 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, 5915 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (971256).

Almost surely, 2^3872261 is an apocalyptic number.

It is an amenable number.

3872261 is a deficient number, since it is larger than the sum of its proper divisors (12763).

3872261 is a wasteful number, since it uses less digits than its factorization.

3872261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762.

The product of its digits is 4032, while the sum is 29.

The square root of 3872261 is about 1967.8061388257. The cubic root of 3872261 is about 157.0320164059.

It can be divided in two parts, 38722 and 61, that added together give a palindrome (38783).

The spelling of 3872261 in words is "three million, eight hundred seventy-two thousand, two hundred sixty-one".