3999471 has 24 divisors (see below), whose sum is σ = 6483840. Its totient is φ = 2147712.

The previous prime is 3999467. The next prime is 3999487. The reversal of 3999471 is 1749993.

It is not a de Polignac number, because 3999471 - 2² = 3999467 is a prime.

It is a super-3 number, since 3×3999471³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5740 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (270160).

Almost surely, 2^3999471 is an apocalyptic number.

3999471 is a deficient number, since it is larger than the sum of its proper divisors (2484369).

3999471 is a wasteful number, since it uses less digits than its factorization.

3999471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 686 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 3999471 is about 1999.8677456272. The cubic root of 3999471 is about 158.7331070953.

It can be divided in two parts, 399 and 9471, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 3999471 in words is "three million, nine hundred ninety-nine thousand, four hundred seventy-one".