3894731 has 4 divisors (see below), whose sum is σ = 4000032. Its totient is φ = 3789432.

The previous prime is 3894707. The next prime is 3894733. The reversal of 3894731 is 1374983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3894731 - 2¹⁰ = 3893707 is a prime.

It is a super-2 number, since 2×3894731² = 30337859124722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3894691 and 3894700.

It is not an unprimeable number, because it can be changed into a prime (3894733) 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, 52595 + ... + 52668.

It is an arithmetic number, because the mean of its divisors is an integer number (1000008).

Almost surely, 2^3894731 is an apocalyptic number.

3894731 is a deficient number, since it is larger than the sum of its proper divisors (105301).

3894731 is a wasteful number, since it uses less digits than its factorization.

3894731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105300.

The product of its digits is 18144, while the sum is 35.

The square root of 3894731 is about 1973.5072839997. The cubic root of 3894731 is about 157.3351731607.

The spelling of 3894731 in words is "three million, eight hundred ninety-four thousand, seven hundred thirty-one".