38940751 has 4 divisors (see below), whose sum is σ = 39018672. Its totient is φ = 38862832.

The previous prime is 38940739. The next prime is 38940773. The reversal of 38940751 is 15704983.

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

It is a cyclic number.

It is not a de Polignac number, because 38940751 - 2¹⁵ = 38907983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38940751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38940701) 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, 38206 + ... + 39211.

It is an arithmetic number, because the mean of its divisors is an integer number (9754668).

Almost surely, 2^38940751 is an apocalyptic number.

38940751 is a deficient number, since it is larger than the sum of its proper divisors (77921).

38940751 is an equidigital number, since it uses as much as digits as its factorization.

38940751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77920.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 38940751 is about 6240.2524788665. The cubic root of 38940751 is about 338.9493257356.

The spelling of 38940751 in words is "thirty-eight million, nine hundred forty thousand, seven hundred fifty-one".