4475991 has 8 divisors (see below), whose sum is σ = 6427120. Its totient is φ = 2754432.

The previous prime is 4475987. The next prime is 4475993. The reversal of 4475991 is 1995744.

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

It is not a de Polignac number, because 4475991 - 2² = 4475987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 114769 = 4475991 / (4 + 4 + 7 + 5 + 9 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4475993) 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, 57346 + ... + 57423.

It is an arithmetic number, because the mean of its divisors is an integer number (803390).

Almost surely, 2^4475991 is an apocalyptic number.

4475991 is a deficient number, since it is larger than the sum of its proper divisors (1951129).

4475991 is a wasteful number, since it uses less digits than its factorization.

4475991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114785.

The product of its digits is 45360, while the sum is 39.

The square root of 4475991 is about 2115.6537996563. The cubic root of 4475991 is about 164.8022240054.

It can be divided in two parts, 44759 and 91, that added together give a triangular number (44850 = T₂₉₉).

The spelling of 4475991 in words is "four million, four hundred seventy-five thousand, nine hundred ninety-one".