38198899 has 4 divisors (see below), whose sum is σ = 38211264. Its totient is φ = 38186536.

The previous prime is 38198869. The next prime is 38198903. The reversal of 38198899 is 99889183.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38198899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38198869) 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, 2889 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (9552816).

Almost surely, 2^38198899 is an apocalyptic number.

38198899 is a deficient number, since it is larger than the sum of its proper divisors (12365).

38198899 is an equidigital number, since it uses as much as digits as its factorization.

38198899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364.

The product of its digits is 1119744, while the sum is 55.

The square root of 38198899 is about 6180.5257866949. The cubic root of 38198899 is about 336.7830935210.

The spelling of 38198899 in words is "thirty-eight million, one hundred ninety-eight thousand, eight hundred ninety-nine".