4000347 has 40 divisors (see below), whose sum is σ = 6708240. Its totient is φ = 2358720.

The previous prime is 4000343. The next prime is 4000357. The reversal of 4000347 is 7430004.

It is not a de Polignac number, because 4000347 - 2² = 4000343 is a prime.

It is a super-2 number, since 2×4000347² = 32005552240818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000343) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30472 + ... + 30602.

It is an arithmetic number, because the mean of its divisors is an integer number (167706).

Almost surely, 2^4000347 is an apocalyptic number.

4000347 is a deficient number, since it is larger than the sum of its proper divisors (2707893).

4000347 is a wasteful number, since it uses less digits than its factorization.

4000347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 4000347 is about 2000.0867481187. The cubic root of 4000347 is about 158.7446952988.

The spelling of 4000347 in words is "four million, three hundred forty-seven", and thus it is an aban number.