8402001998 has 16 divisors (see below), whose sum is σ = 13903502256. Its totient is φ = 3783264960.

The previous prime is 8402001931. The next prime is 8402002019. The reversal of 8402001998 is 8991002048.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939836 + ... + 3941967.

It is an arithmetic number, because the mean of its divisors is an integer number (868968891).

Almost surely, 2^8402001998 is an apocalyptic number.

8402001998 is a deficient number, since it is larger than the sum of its proper divisors (5501500258).

8402001998 is a wasteful number, since it uses less digits than its factorization.

8402001998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881859.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 8402001998 is about 91662.4350429335. The cubic root of 8402001998 is about 2032.9541947281.

The spelling of 8402001998 in words is "eight billion, four hundred two million, one thousand, nine hundred ninety-eight".