4373991 has 12 divisors (see below), whose sum is σ = 6352632. Its totient is φ = 2900016.

The previous prime is 4373989. The next prime is 4374001. The reversal of 4373991 is 1993734.

It is not a de Polignac number, because 4373991 - 2¹ = 4373989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4373911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (529386).

Almost surely, 2^4373991 is an apocalyptic number.

4373991 is a deficient number, since it is larger than the sum of its proper divisors (1978641).

4373991 is a wasteful number, since it uses less digits than its factorization.

4373991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2667 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 4373991 is about 2091.4088552935. The cubic root of 4373991 is about 163.5407411869.

The spelling of 4373991 in words is "four million, three hundred seventy-three thousand, nine hundred ninety-one".