398970782242 has 8 divisors (see below), whose sum is σ = 605180400300. Its totient is φ = 197243982144.

The previous prime is 398970782219. The next prime is 398970782317. The reversal of 398970782242 is 242287079893.

It can be written as a sum of positive squares in 2 ways, for example, as 288700961481 + 110269820761 = 537309^2 + 332069^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120704267 + ... + 1120704622.

Almost surely, 2^398970782242 is an apocalyptic number.

398970782242 is a deficient number, since it is larger than the sum of its proper divisors (206209618058).

398970782242 is a wasteful number, since it uses less digits than its factorization.

398970782242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241408980.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 398970782242 in words is "three hundred ninety-eight billion, nine hundred seventy million, seven hundred eighty-two thousand, two hundred forty-two".