398550672 has 240 divisors, whose sum is σ = 1274382720. Its totient is φ = 119149056.

The previous prime is 398550641. The next prime is 398550697. The reversal of 398550672 is 276055893.

It is a happy number.

398550672 is a `hidden beast` number, since 3 + 98 + 550 + 6 + 7 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3869373 + ... + 3869475.

It is an arithmetic number, because the mean of its divisors is an integer number (5309928).

Almost surely, 2^398550672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398550672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637191360).

398550672 is an abundant number, since it is smaller than the sum of its proper divisors (875832048).

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

398550672 is a wasteful number, since it uses less digits than its factorization.

398550672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 398550672 is about 19963.7339192847. The cubic root of 398550672 is about 735.9153277672.

The spelling of 398550672 in words is "three hundred ninety-eight million, five hundred fifty thousand, six hundred seventy-two".