4027491 has 24 divisors (see below), whose sum is σ = 6486480. Its totient is φ = 2390976.

The previous prime is 4027481. The next prime is 4027493. The reversal of 4027491 is 1947204.

It is a happy number.

It is not a de Polignac number, because 4027491 - 2⁵ = 4027459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4027493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2800 + ... + 3986.

It is an arithmetic number, because the mean of its divisors is an integer number (270270).

Almost surely, 2^4027491 is an apocalyptic number.

4027491 is a deficient number, since it is larger than the sum of its proper divisors (2458989).

4027491 is a wasteful number, since it uses less digits than its factorization.

4027491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 4027491 is about 2006.8609817324. The cubic root of 4027491 is about 159.1029356004.

The spelling of 4027491 in words is "four million, twenty-seven thousand, four hundred ninety-one".