38995999 has 16 divisors (see below), whose sum is σ = 47393280. Its totient is φ = 31341600.

The previous prime is 38995987. The next prime is 38996053. The reversal of 38995999 is 99959983.

It is a cyclic number.

It is not a de Polignac number, because 38995999 - 2⁷ = 38995871 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 (38995939) 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 15 ways as a sum of consecutive naturals, for example, 11982 + ... + 14884.

It is an arithmetic number, because the mean of its divisors is an integer number (2962080).

Almost surely, 2^38995999 is an apocalyptic number.

38995999 is a deficient number, since it is larger than the sum of its proper divisors (8397281).

38995999 is a wasteful number, since it uses less digits than its factorization.

38995999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030.

The product of its digits is 7085880, while the sum is 61.

The square root of 38995999 is about 6244.6776538105. The cubic root of 38995999 is about 339.1095471211.

The spelling of 38995999 in words is "thirty-eight million, nine hundred ninety-five thousand, nine hundred ninety-nine".