4000537 has 4 divisors (see below), whose sum is σ = 4029876. Its totient is φ = 3971200.

The previous prime is 4000523. The next prime is 4000541. The reversal of 4000537 is 7350004.

4000537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1798281 + 2202256 = 1341^2 + 1484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14464 + ... + 14737.

It is an arithmetic number, because the mean of its divisors is an integer number (1007469).

Almost surely, 2^4000537 is an apocalyptic number.

It is an amenable number.

4000537 is a deficient number, since it is larger than the sum of its proper divisors (29339).

4000537 is a wasteful number, since it uses less digits than its factorization.

4000537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29338.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 4000537 is about 2000.1342454945. The cubic root of 4000537 is about 158.7472084987.

The spelling of 4000537 in words is "four million, five hundred thirty-seven", and thus it is an aban number.