38940899 has 4 divisors (see below), whose sum is σ = 40990440. Its totient is φ = 36891360.

The previous prime is 38940877. The next prime is 38940907. The reversal of 38940899 is 99804983.

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 38940899 - 2¹⁶ = 38875363 is a prime.

It is a super-2 number, since 2×38940899² = 3032787229856402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38940859) 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, 1024742 + ... + 1024779.

It is an arithmetic number, because the mean of its divisors is an integer number (10247610).

Almost surely, 2^38940899 is an apocalyptic number.

38940899 is a deficient number, since it is larger than the sum of its proper divisors (2049541).

38940899 is a wasteful number, since it uses less digits than its factorization.

38940899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049540.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 38940899 is about 6240.2643373498. The cubic root of 38940899 is about 338.9497551439.

The spelling of 38940899 in words is "thirty-eight million, nine hundred forty thousand, eight hundred ninety-nine".