438998129899 has 16 divisors (see below), whose sum is σ = 533403574272. Its totient is φ = 353132908128.

The previous prime is 438998129881. The next prime is 438998129923. The reversal of 438998129899 is 998921899834.

It is not a de Polignac number, because 438998129899 - 2¹³ = 438998121707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438998129809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25715019 + ... + 25732084.

It is an arithmetic number, because the mean of its divisors is an integer number (33337723392).

Almost surely, 2^438998129899 is an apocalyptic number.

438998129899 is a deficient number, since it is larger than the sum of its proper divisors (94405444373).

438998129899 is a wasteful number, since it uses less digits than its factorization.

438998129899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51447186.

The product of its digits is 725594112, while the sum is 79.

The spelling of 438998129899 in words is "four hundred thirty-eight billion, nine hundred ninety-eight million, one hundred twenty-nine thousand, eight hundred ninety-nine".