38898442499 has 4 divisors (see below), whose sum is σ = 44455362864. Its totient is φ = 33341522136.

The previous prime is 38898442489. The next prime is 38898442507. The reversal of 38898442499 is 99424489883.

It is a happy number.

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 38898442499 - 2⁸ = 38898442243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38898442489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778460172 + ... + 2778460185.

It is an arithmetic number, because the mean of its divisors is an integer number (11113840716).

Almost surely, 2^38898442499 is an apocalyptic number.

38898442499 is a deficient number, since it is larger than the sum of its proper divisors (5556920365).

38898442499 is an equidigital number, since it uses as much as digits as its factorization.

38898442499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556920364.

The product of its digits is 143327232, while the sum is 68.

The spelling of 38898442499 in words is "thirty-eight billion, eight hundred ninety-eight million, four hundred forty-two thousand, four hundred ninety-nine".