4091971573 has 4 divisors (see below), whose sum is σ = 4223970688. Its totient is φ = 3959972460.

The previous prime is 4091971567. The next prime is 4091971579. The reversal of 4091971573 is 3751791904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4091971567) and next prime (4091971579).

It is a cyclic number.

It is not a de Polignac number, because 4091971573 - 2⁹ = 4091971061 is a prime.

It is a super-3 number, since 3×4091971573³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091971579) 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, 65999511 + ... + 65999572.

It is an arithmetic number, because the mean of its divisors is an integer number (1055992672).

Almost surely, 2^4091971573 is an apocalyptic number.

It is an amenable number.

4091971573 is a deficient number, since it is larger than the sum of its proper divisors (131999115).

4091971573 is a wasteful number, since it uses less digits than its factorization.

4091971573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131999114.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 4091971573 is about 63968.5201720346. The cubic root of 4091971573 is about 1599.4752931799.

The spelling of 4091971573 in words is "four billion, ninety-one million, nine hundred seventy-one thousand, five hundred seventy-three".