398847398 has 4 divisors (see below), whose sum is σ = 598271100. Its totient is φ = 199423698.

The previous prime is 398847343. The next prime is 398847409. The reversal of 398847398 is 893748893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893748893 = 4481 ⋅199453.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99711848 + ... + 99711851.

It is an arithmetic number, because the mean of its divisors is an integer number (149567775).

Almost surely, 2^398847398 is an apocalyptic number.

398847398 is a deficient number, since it is larger than the sum of its proper divisors (199423702).

398847398 is a wasteful number, since it uses less digits than its factorization.

398847398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199423701.

The product of its digits is 10450944, while the sum is 59.

The square root of 398847398 is about 19971.1641623617. The cubic root of 398847398 is about 736.0979152084.

The spelling of 398847398 in words is "three hundred ninety-eight million, eight hundred forty-seven thousand, three hundred ninety-eight".