8400399998 has 8 divisors (see below), whose sum is σ = 12602563680. Its totient is φ = 4199545440.

The previous prime is 8400399949. The next prime is 8400400049. The reversal of 8400399998 is 8999930048.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 311078 + ... + 337001.

It is an arithmetic number, because the mean of its divisors is an integer number (1575320460).

Almost surely, 2^8400399998 is an apocalyptic number.

8400399998 is a deficient number, since it is larger than the sum of its proper divisors (4202163682).

8400399998 is a wasteful number, since it uses less digits than its factorization.

8400399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654562.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 8400399998 is about 91653.6960411308. The cubic root of 8400399998 is about 2032.8249795072.

The spelling of 8400399998 in words is "eight billion, four hundred million, three hundred ninety-nine thousand, nine hundred ninety-eight".