38440037 has 4 divisors (see below), whose sum is σ = 38685036. Its totient is φ = 38195040.

The previous prime is 38440027. The next prime is 38440067. The reversal of 38440037 is 73004483.

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 9431041 + 29008996 = 3071^2 + 5386^2 .

It is a cyclic number.

It is not a de Polignac number, because 38440037 - 2¹² = 38435941 is a prime.

It is a super-2 number, since 2×38440037² = 2955272889122738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38439991 and 38440009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38440027) 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, 122264 + ... + 122577.

It is an arithmetic number, because the mean of its divisors is an integer number (9671259).

Almost surely, 2^38440037 is an apocalyptic number.

It is an amenable number.

38440037 is a deficient number, since it is larger than the sum of its proper divisors (244999).

38440037 is a wasteful number, since it uses less digits than its factorization.

38440037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244998.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 38440037 is about 6200.0029838702. The cubic root of 38440037 is about 337.4902771776.

The spelling of 38440037 in words is "thirty-eight million, four hundred forty thousand, thirty-seven".