398934837 has 12 divisors (see below), whose sum is σ = 658559200. Its totient is φ = 227962728.

The previous prime is 398934827. The next prime is 398934847. The reversal of 398934837 is 738439893.

It is an interprime number because it is at equal distance from previous prime (398934827) and next prime (398934847).

It is not a de Polignac number, because 398934837 - 2⁷ = 398934709 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 (398934827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3166087 + ... + 3166212.

Almost surely, 2^398934837 is an apocalyptic number.

It is an amenable number.

398934837 is a deficient number, since it is larger than the sum of its proper divisors (259624363).

398934837 is a wasteful number, since it uses less digits than its factorization.

398934837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332312 (or 6332309 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 398934837 is about 19973.3531736662. The cubic root of 398934837 is about 736.1517026661.

The spelling of 398934837 in words is "three hundred ninety-eight million, nine hundred thirty-four thousand, eight hundred thirty-seven".