398221006140 has 36 divisors (see below), whose sum is σ = 1207937052504. Its totient is φ = 106192268256.

The previous prime is 398221006111. The next prime is 398221006151. The reversal of 398221006140 is 41600122893.

398221006140 is a `hidden beast` number, since 3 + 9 + 8 + 22 + 10 + 0 + 614 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 398221006095 and 398221006104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1106169282 + ... + 1106169641.

It is an arithmetic number, because the mean of its divisors is an integer number (33553807014).

Almost surely, 2^398221006140 is an apocalyptic number.

398221006140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398221006140 is an abundant number, since it is smaller than the sum of its proper divisors (809716046364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398221006140 is a wasteful number, since it uses less digits than its factorization.

398221006140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212338938 (or 2212338933 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 398221006140 in words is "three hundred ninety-eight billion, two hundred twenty-one million, six thousand, one hundred forty".