398634780273 has 8 divisors (see below), whose sum is σ = 531527184288. Its totient is φ = 265749448224.

The previous prime is 398634780221. The next prime is 398634780277. The reversal of 398634780273 is 372087436893.

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

It is not a de Polignac number, because 398634780273 - 2⁸ = 398634780017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398634780277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635036 + ... + 1862957.

It is an arithmetic number, because the mean of its divisors is an integer number (66440898036).

Almost surely, 2^398634780273 is an apocalyptic number.

It is an amenable number.

398634780273 is a deficient number, since it is larger than the sum of its proper divisors (132892404015).

398634780273 is a wasteful number, since it uses less digits than its factorization.

398634780273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535983.

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 398634780273 in words is "three hundred ninety-eight billion, six hundred thirty-four million, seven hundred eighty thousand, two hundred seventy-three".