38899999 has 8 divisors (see below), whose sum is σ = 39586608. Its totient is φ = 38216640.

The previous prime is 38899981. The next prime is 38900003. The reversal of 38899999 is 99999883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38899999 - 2⁵ = 38899967 is a prime.

It is a Duffinian number.

38899999 is a modest number, since divided by 9999 gives 3889 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 38899999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38893999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40869 + ... + 41809.

It is an arithmetic number, because the mean of its divisors is an integer number (4948326).

Almost surely, 2^38899999 is an apocalyptic number.

38899999 is a deficient number, since it is larger than the sum of its proper divisors (686609).

38899999 is an equidigital number, since it uses as much as digits as its factorization.

38899999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its digits is 11337408, while the sum is 64.

The square root of 38899999 is about 6236.9863716381. The cubic root of 38899999 is about 338.8310461800.

The spelling of 38899999 in words is "thirty-eight million, eight hundred ninety-nine thousand, nine hundred ninety-nine".