4100391 has 6 divisors (see below), whose sum is σ = 5922800. Its totient is φ = 2733588.

The previous prime is 4100381. The next prime is 4100399. The reversal of 4100391 is 1930014.

It is not a de Polignac number, because 4100391 - 2⁷ = 4100263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4100399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227791 + ... + 227808.

Almost surely, 2^4100391 is an apocalyptic number.

4100391 is a deficient number, since it is larger than the sum of its proper divisors (1822409).

4100391 is a wasteful number, since it uses less digits than its factorization.

4100391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455605 (or 455602 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 4100391 is about 2024.9422213979. The cubic root of 4100391 is about 160.0571540606.

The spelling of 4100391 in words is "four million, one hundred thousand, three hundred ninety-one".