38969999 has 4 divisors (see below), whose sum is σ = 39705336. Its totient is φ = 38234664.

The previous prime is 38969993. The next prime is 38970013. The reversal of 38969999 is 99996983.

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 38969999 - 2⁸ = 38969743 is a prime.

It is a Duffinian number.

38969999 is a modest number, since divided by 9999 gives 3896 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38969993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367589 + ... + 367694.

It is an arithmetic number, because the mean of its divisors is an integer number (9926334).

Almost surely, 2^38969999 is an apocalyptic number.

38969999 is a deficient number, since it is larger than the sum of its proper divisors (735337).

38969999 is an equidigital number, since it uses as much as digits as its factorization.

38969999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735336.

The product of its digits is 8503056, while the sum is 62.

The square root of 38969999 is about 6242.5955339106. The cubic root of 38969999 is about 339.0341649564.

The spelling of 38969999 in words is "thirty-eight million, nine hundred sixty-nine thousand, nine hundred ninety-nine".