4371091 has 4 divisors (see below), whose sum is σ = 4628232. Its totient is φ = 4113952.

The previous prime is 4371089. The next prime is 4371097. The reversal of 4371091 is 1901734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901734 = 2 ⋅950867.

It is a cyclic number.

It is not a de Polignac number, because 4371091 - 2¹ = 4371089 is a prime.

It is a Duffinian number.

4371091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4371097) 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, 128545 + ... + 128578.

It is an arithmetic number, because the mean of its divisors is an integer number (1157058).

Almost surely, 2^4371091 is an apocalyptic number.

4371091 is a deficient number, since it is larger than the sum of its proper divisors (257141).

4371091 is a wasteful number, since it uses less digits than its factorization.

4371091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257140.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 4371091 is about 2090.7154277902. The cubic root of 4371091 is about 163.5045901444.

It can be divided in two parts, 43710 and 91, that multiplied together give a triangular number (3977610 = T₂₈₂₀).

The spelling of 4371091 in words is "four million, three hundred seventy-one thousand, ninety-one".