4072591 has 4 divisors (see below), whose sum is σ = 4077184. Its totient is φ = 4068000.

The previous prime is 4072589. The next prime is 4072609. The reversal of 4072591 is 1952704.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4072591 - 2¹ = 4072589 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 (4072531) 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, 495 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (1019296).

Almost surely, 2^4072591 is an apocalyptic number.

4072591 is a deficient number, since it is larger than the sum of its proper divisors (4593).

4072591 is a wasteful number, since it uses less digits than its factorization.

4072591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 4072591 is about 2018.0661535242. The cubic root of 4072591 is about 159.6946128000.

The spelling of 4072591 in words is "four million, seventy-two thousand, five hundred ninety-one".