398240976155 has 8 divisors (see below), whose sum is σ = 521333641584. Its totient is φ = 289629800800.

The previous prime is 398240976151. The next prime is 398240976157. The reversal of 398240976155 is 551679042893.

It is a happy number.

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

It is not a de Polignac number, because 398240976155 - 2² = 398240976151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398240976094 and 398240976103.

It is not an unprimeable number, because it can be changed into a prime (398240976151) 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, 3620372456 + ... + 3620372565.

It is an arithmetic number, because the mean of its divisors is an integer number (65166705198).

It is a 2-persistent number, because it is pandigital, and so is 2⋅398240976155 = 796481952310, but 3⋅398240976155 = 1194722928465 is not.

Almost surely, 2^398240976155 is an apocalyptic number.

398240976155 is a deficient number, since it is larger than the sum of its proper divisors (123092665429).

398240976155 is a wasteful number, since it uses less digits than its factorization.

398240976155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240745037.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 398240976155 in words is "three hundred ninety-eight billion, two hundred forty million, nine hundred seventy-six thousand, one hundred fifty-five".