4425991 has 4 divisors (see below), whose sum is σ = 4533984. Its totient is φ = 4318000.

The previous prime is 4425989. The next prime is 4425997. The reversal of 4425991 is 1995244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4425991 - 2¹ = 4425989 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 (4425997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53935 + ... + 54016.

It is an arithmetic number, because the mean of its divisors is an integer number (1133496).

Almost surely, 2^4425991 is an apocalyptic number.

4425991 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4425991 is a deficient number, since it is larger than the sum of its proper divisors (107993).

4425991 is a wasteful number, since it uses less digits than its factorization.

4425991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107992.

The product of its digits is 12960, while the sum is 34.

The square root of 4425991 is about 2103.8039357317. The cubic root of 4425991 is about 164.1862720909.

The spelling of 4425991 in words is "four million, four hundred twenty-five thousand, nine hundred ninety-one".