398949488351 has 4 divisors (see below), whose sum is σ = 398953230000. Its totient is φ = 398945746704.

The previous prime is 398949488281. The next prime is 398949488381. The reversal of 398949488351 is 153884949893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153884949893 = 23981 ⋅6416953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398949488351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398949488381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706051 + ... + 1925748.

It is an arithmetic number, because the mean of its divisors is an integer number (99738307500).

Almost surely, 2^398949488351 is an apocalyptic number.

398949488351 is a deficient number, since it is larger than the sum of its proper divisors (3741649).

398949488351 is a wasteful number, since it uses less digits than its factorization.

398949488351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741648.

The product of its digits is 268738560, while the sum is 71.

The spelling of 398949488351 in words is "three hundred ninety-eight billion, nine hundred forty-nine million, four hundred eighty-eight thousand, three hundred fifty-one".