3891542 has 8 divisors (see below), whose sum is σ = 6144600. Its totient is φ = 1843344.

The previous prime is 3891541. The next prime is 3891551. The reversal of 3891542 is 2451983.

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

It is a junction number, because it is equal to n+sod(n) for n = 3891499 and 3891508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891541) 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, 51167 + ... + 51242.

It is an arithmetic number, because the mean of its divisors is an integer number (768075).

Almost surely, 2^3891542 is an apocalyptic number.

3891542 is a deficient number, since it is larger than the sum of its proper divisors (2253058).

3891542 is a wasteful number, since it uses less digits than its factorization.

3891542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102430.

The product of its digits is 8640, while the sum is 32.

The square root of 3891542 is about 1972.6991661173. The cubic root of 3891542 is about 157.2922194992.

The spelling of 3891542 in words is "three million, eight hundred ninety-one thousand, five hundred forty-two".