3998771 has 8 divisors (see below), whose sum is σ = 4681824. Its totient is φ = 3343680.

The previous prime is 3998749. The next prime is 3998773. The reversal of 3998771 is 1778993.

3998771 = T₄₂₁ + T₄₂₂ + ... + T₄₆₁.

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

It is a cyclic number.

It is not a de Polignac number, because 3998771 - 2⁶ = 3998707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3998773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (585228).

Almost surely, 2^3998771 is an apocalyptic number.

3998771 is a deficient number, since it is larger than the sum of its proper divisors (683053).

3998771 is a wasteful number, since it uses less digits than its factorization.

3998771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13981.

The product of its digits is 95256, while the sum is 44.

The square root of 3998771 is about 1999.6927263957. The cubic root of 3998771 is about 158.7238458990.

The spelling of 3998771 in words is "three million, nine hundred ninety-eight thousand, seven hundred seventy-one".