398006136 has 80 divisors (see below), whose sum is σ = 1216151640. Its totient is φ = 120605760.

The previous prime is 398006093. The next prime is 398006171. The reversal of 398006136 is 631600893.

It is a happy number.

398006136 is a `hidden beast` number, since 39 + 8 + 0 + 0 + 613 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 398006136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20791 + ... + 35046.

Almost surely, 2^398006136 is an apocalyptic number.

398006136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

398006136 is an abundant number, since it is smaller than the sum of its proper divisors (818145504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398006136 is a wasteful number, since it uses less digits than its factorization.

398006136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55866 (or 55853 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 398006136 is about 19950.0911276114. The cubic root of 398006136 is about 735.5800169679.

The spelling of 398006136 in words is "three hundred ninety-eight million, six thousand, one hundred thirty-six".