4059991 has 8 divisors (see below), whose sum is σ = 4629744. Its totient is φ = 3527040.

The previous prime is 4059953. The next prime is 4060009. The reversal of 4059991 is 1999504.

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 4059991 - 2²¹ = 1962839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4059991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4059191) 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, 8965 + ... + 9406.

It is an arithmetic number, because the mean of its divisors is an integer number (578718).

Almost surely, 2^4059991 is an apocalyptic number.

4059991 is a deficient number, since it is larger than the sum of its proper divisors (569753).

4059991 is a wasteful number, since it uses less digits than its factorization.

4059991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18401.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 4059991 is about 2014.9419346472. The cubic root of 4059991 is about 159.5297520846.

It can be divided in two parts, 4059 and 991, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 4059991 in words is "four million, fifty-nine thousand, nine hundred ninety-one".