38999111 has 4 divisors (see below), whose sum is σ = 39261000. Its totient is φ = 38737224.

The previous prime is 38999101. The next prime is 38999117. The reversal of 38999111 is 11199983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11199983 = 193 ⋅58031.

It is a cyclic number.

It is not a de Polignac number, because 38999111 - 2²² = 34804807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38999117) 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, 130721 + ... + 131018.

It is an arithmetic number, because the mean of its divisors is an integer number (9815250).

Almost surely, 2^38999111 is an apocalyptic number.

38999111 is a deficient number, since it is larger than the sum of its proper divisors (261889).

38999111 is a wasteful number, since it uses less digits than its factorization.

38999111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261888.

The product of its digits is 17496, while the sum is 41.

The square root of 38999111 is about 6244.9268210284. The cubic root of 38999111 is about 339.1185675408.

The spelling of 38999111 in words is "thirty-eight million, nine hundred ninety-nine thousand, one hundred eleven".