3892561 has 4 divisors (see below), whose sum is σ = 3897072. Its totient is φ = 3888052.

The previous prime is 3892519. The next prime is 3892571. The reversal of 3892561 is 1652983.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1652983 = 163 ⋅10141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3892561 is a prime.

It is a super-2 number, since 2×3892561² = 30304062277442, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3892571) 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, 511 + ... + 2836.

It is an arithmetic number, because the mean of its divisors is an integer number (974268).

Almost surely, 2^3892561 is an apocalyptic number.

It is an amenable number.

3892561 is a deficient number, since it is larger than the sum of its proper divisors (4511).

3892561 is a wasteful number, since it uses less digits than its factorization.

3892561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510.

The product of its digits is 12960, while the sum is 34.

The square root of 3892561 is about 1972.9574247814. The cubic root of 3892561 is about 157.3059472866.

The spelling of 3892561 in words is "three million, eight hundred ninety-two thousand, five hundred sixty-one".