4375726991 has 4 divisors (see below), whose sum is σ = 4386426000. Its totient is φ = 4365027984.

The previous prime is 4375726987. The next prime is 4375726997. The reversal of 4375726991 is 1996275734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1996275734 = 2 ⋅998137867.

It is a cyclic number.

It is not a de Polignac number, because 4375726991 - 2² = 4375726987 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 (4375726997) 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, 5348891 + ... + 5349708.

It is an arithmetic number, because the mean of its divisors is an integer number (1096606500).

Almost surely, 2^4375726991 is an apocalyptic number.

4375726991 is a deficient number, since it is larger than the sum of its proper divisors (10699009).

4375726991 is a wasteful number, since it uses less digits than its factorization.

4375726991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10699008.

The product of its digits is 2857680, while the sum is 53.

The square root of 4375726991 is about 66149.2780837403. The cubic root of 4375726991 is about 1635.6237419157.

The spelling of 4375726991 in words is "four billion, three hundred seventy-five million, seven hundred twenty-six thousand, nine hundred ninety-one".