398387028191 has 16 divisors (see below), whose sum is σ = 402262169568. Its totient is φ = 394535232000.

The previous prime is 398387028163. The next prime is 398387028209. The reversal of 398387028191 is 191820783893.

It is a cyclic number.

It is not a de Polignac number, because 398387028191 - 2¹⁰ = 398387027167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398387028191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398387028691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39686825 + ... + 39696861.

It is an arithmetic number, because the mean of its divisors is an integer number (25141385598).

Almost surely, 2^398387028191 is an apocalyptic number.

398387028191 is a deficient number, since it is larger than the sum of its proper divisors (3875141377).

398387028191 is a wasteful number, since it uses less digits than its factorization.

398387028191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 398387028191 in words is "three hundred ninety-eight billion, three hundred eighty-seven million, twenty-eight thousand, one hundred ninety-one".