398580382 has 4 divisors (see below), whose sum is σ = 597870576. Its totient is φ = 199290190.

The previous prime is 398580367. The next prime is 398580383. The reversal of 398580382 is 283085893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283085893 = 31 ⋅9131803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398580383) by changing a digit.

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 as a sum of consecutive naturals, namely, 99645094 + ... + 99645097.

It is an arithmetic number, because the mean of its divisors is an integer number (149467644).

Almost surely, 2^398580382 is an apocalyptic number.

398580382 is a deficient number, since it is larger than the sum of its proper divisors (199290194).

398580382 is a wasteful number, since it uses less digits than its factorization.

398580382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199290193.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 398580382 is about 19964.4780046962. The cubic root of 398580382 is about 735.9336136070.

The spelling of 398580382 in words is "three hundred ninety-eight million, five hundred eighty thousand, three hundred eighty-two".