398339836 has 6 divisors (see below), whose sum is σ = 697094720. Its totient is φ = 199169916.

The previous prime is 398339833. The next prime is 398339839. The reversal of 398339836 is 638933893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (398339833) and next prime (398339839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398339833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49792476 + ... + 49792483.

Almost surely, 2^398339836 is an apocalyptic number.

It is an amenable number.

398339836 is a deficient number, since it is larger than the sum of its proper divisors (298754884).

398339836 is a wasteful number, since it uses less digits than its factorization.

398339836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99584963 (or 99584961 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 52.

The square root of 398339836 is about 19958.4527456414. The cubic root of 398339836 is about 735.7855368165.

The spelling of 398339836 in words is "three hundred ninety-eight million, three hundred thirty-nine thousand, eight hundred thirty-six".